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parse_relation.h File Reference
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Data Structures

struct  FuzzyAttrMatchState
 

Functions

RangeTblEntryrefnameRangeTblEntry (ParseState *pstate, const char *schemaname, const char *refname, int location, int *sublevels_up)
 
CommonTableExprscanNameSpaceForCTE (ParseState *pstate, const char *refname, Index *ctelevelsup)
 
void checkNameSpaceConflicts (ParseState *pstate, List *namespace1, List *namespace2)
 
int RTERangeTablePosn (ParseState *pstate, RangeTblEntry *rte, int *sublevels_up)
 
RangeTblEntryGetRTEByRangeTablePosn (ParseState *pstate, int varno, int sublevels_up)
 
CommonTableExprGetCTEForRTE (ParseState *pstate, RangeTblEntry *rte, int rtelevelsup)
 
NodescanRTEForColumn (ParseState *pstate, RangeTblEntry *rte, char *colname, int location, int fuzzy_rte_penalty, FuzzyAttrMatchState *fuzzystate)
 
NodecolNameToVar (ParseState *pstate, char *colname, bool localonly, int location)
 
void markVarForSelectPriv (ParseState *pstate, Var *var, RangeTblEntry *rte)
 
Relation parserOpenTable (ParseState *pstate, const RangeVar *relation, int lockmode)
 
RangeTblEntryaddRangeTableEntry (ParseState *pstate, RangeVar *relation, Alias *alias, bool inh, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForRelation (ParseState *pstate, Relation rel, Alias *alias, bool inh, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForSubquery (ParseState *pstate, Query *subquery, Alias *alias, bool lateral, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForFunction (ParseState *pstate, List *funcnames, List *funcexprs, List *coldeflists, RangeFunction *rangefunc, bool lateral, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForValues (ParseState *pstate, List *exprs, List *coltypes, List *coltypmods, List *colcollations, Alias *alias, bool lateral, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForJoin (ParseState *pstate, List *colnames, JoinType jointype, List *aliasvars, Alias *alias, bool inFromCl)
 
RangeTblEntryaddRangeTableEntryForCTE (ParseState *pstate, CommonTableExpr *cte, Index levelsup, RangeVar *rv, bool inFromCl)
 
bool isLockedRefname (ParseState *pstate, const char *refname)
 
void addRTEtoQuery (ParseState *pstate, RangeTblEntry *rte, bool addToJoinList, bool addToRelNameSpace, bool addToVarNameSpace)
 
void errorMissingRTE (ParseState *pstate, RangeVar *relation) pg_attribute_noreturn()
 
void errorMissingColumn (ParseState *pstate, char *relname, char *colname, int location) pg_attribute_noreturn()
 
void expandRTE (RangeTblEntry *rte, int rtindex, int sublevels_up, int location, bool include_dropped, List **colnames, List **colvars)
 
ListexpandRelAttrs (ParseState *pstate, RangeTblEntry *rte, int rtindex, int sublevels_up, int location)
 
int attnameAttNum (Relation rd, const char *attname, bool sysColOK)
 
Name attnumAttName (Relation rd, int attid)
 
Oid attnumTypeId (Relation rd, int attid)
 
Oid attnumCollationId (Relation rd, int attid)
 
bool isQueryUsingTempRelation (Query *query)
 

Function Documentation

RangeTblEntry* addRangeTableEntry ( ParseState pstate,
RangeVar relation,
Alias alias,
bool  inh,
bool  inFromCl 
)

Definition at line 1173 of file parse_relation.c.

References AccessShareLock, ACL_SELECT, RangeTblEntry::alias, Alias::aliasname, Assert, buildRelationAliases(), RangeTblEntry::checkAsUser, RangeTblEntry::eref, heap_close, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, isLockedRefname(), lappend(), RangeTblEntry::lateral, makeAlias(), makeNode, NIL, NoLock, NULL, ParseState::p_rtable, parserOpenTable(), RelationData::rd_att, RelationData::rd_rel, RelationGetRelid, RangeTblEntry::relid, RangeTblEntry::relkind, RangeVar::relname, RangeTblEntry::requiredPerms, RowShareLock, RTE_RELATION, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, and RangeTblEntry::updatedCols.

Referenced by transformTableEntry().

1178 {
1180  char *refname = alias ? alias->aliasname : relation->relname;
1181  LOCKMODE lockmode;
1182  Relation rel;
1183 
1184  Assert(pstate != NULL);
1185 
1186  rte->rtekind = RTE_RELATION;
1187  rte->alias = alias;
1188 
1189  /*
1190  * Get the rel's OID. This access also ensures that we have an up-to-date
1191  * relcache entry for the rel. Since this is typically the first access
1192  * to a rel in a statement, be careful to get the right access level
1193  * depending on whether we're doing SELECT FOR UPDATE/SHARE.
1194  */
1195  lockmode = isLockedRefname(pstate, refname) ? RowShareLock : AccessShareLock;
1196  rel = parserOpenTable(pstate, relation, lockmode);
1197  rte->relid = RelationGetRelid(rel);
1198  rte->relkind = rel->rd_rel->relkind;
1199 
1200  /*
1201  * Build the list of effective column names using user-supplied aliases
1202  * and/or actual column names.
1203  */
1204  rte->eref = makeAlias(refname, NIL);
1205  buildRelationAliases(rel->rd_att, alias, rte->eref);
1206 
1207  /*
1208  * Drop the rel refcount, but keep the access lock till end of transaction
1209  * so that the table can't be deleted or have its schema modified
1210  * underneath us.
1211  */
1212  heap_close(rel, NoLock);
1213 
1214  /*
1215  * Set flags and access permissions.
1216  *
1217  * The initial default on access checks is always check-for-READ-access,
1218  * which is the right thing for all except target tables.
1219  */
1220  rte->lateral = false;
1221  rte->inh = inh;
1222  rte->inFromCl = inFromCl;
1223 
1224  rte->requiredPerms = ACL_SELECT;
1225  rte->checkAsUser = InvalidOid; /* not set-uid by default, either */
1226  rte->selectedCols = NULL;
1227  rte->insertedCols = NULL;
1228  rte->updatedCols = NULL;
1229 
1230  /*
1231  * Add completed RTE to pstate's range table list, but not to join list
1232  * nor namespace --- caller must do that if appropriate.
1233  */
1234  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1235 
1236  return rte;
1237 }
#define NIL
Definition: pg_list.h:69
Alias * alias
Definition: parsenodes.h:960
int LOCKMODE
Definition: lockdefs.h:26
#define AccessShareLock
Definition: lockdefs.h:36
Relation parserOpenTable(ParseState *pstate, const RangeVar *relation, int lockmode)
AclMode requiredPerms
Definition: parsenodes.h:965
#define heap_close(r, l)
Definition: heapam.h:97
Form_pg_class rd_rel
Definition: rel.h:113
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
char * relname
Definition: primnodes.h:67
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define NoLock
Definition: lockdefs.h:34
List * lappend(List *list, void *datum)
Definition: list.c:128
#define RowShareLock
Definition: lockdefs.h:37
#define ACL_SELECT
Definition: parsenodes.h:66
TupleDesc rd_att
Definition: rel.h:114
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
char * aliasname
Definition: primnodes.h:41
RTEKind rtekind
Definition: parsenodes.h:882
Bitmapset * insertedCols
Definition: parsenodes.h:968
static void buildRelationAliases(TupleDesc tupdesc, Alias *alias, Alias *eref)
bool isLockedRefname(ParseState *pstate, const char *refname)
Alias * eref
Definition: parsenodes.h:961
#define RelationGetRelid(relation)
Definition: rel.h:413
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForCTE ( ParseState pstate,
CommonTableExpr cte,
Index  levelsup,
RangeVar rv,
bool  inFromCl 
)

Definition at line 1784 of file parse_relation.c.

References RangeVar::alias, RangeTblEntry::alias, Alias::aliasname, Assert, RangeTblEntry::checkAsUser, CMD_SELECT, RangeTblEntry::colcollations, Alias::colnames, RangeTblEntry::coltypes, RangeTblEntry::coltypmods, Query::commandType, copyObject(), CommonTableExpr::ctecolcollations, CommonTableExpr::ctecolnames, CommonTableExpr::ctecoltypes, CommonTableExpr::ctecoltypmods, RangeTblEntry::ctelevelsup, RangeTblEntry::ctename, CommonTableExpr::ctename, CommonTableExpr::ctequery, CommonTableExpr::cterecursive, CommonTableExpr::cterefcount, RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, IsA, lappend(), RangeTblEntry::lateral, lfirst, list_length(), RangeVar::location, makeAlias(), makeNode, NIL, NULL, ParseState::p_rtable, parser_errposition(), RangeTblEntry::requiredPerms, Query::returningList, RTE_CTE, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, RangeTblEntry::self_reference, and RangeTblEntry::updatedCols.

Referenced by transformCTEReference().

1789 {
1791  Alias *alias = rv->alias;
1792  char *refname = alias ? alias->aliasname : cte->ctename;
1793  Alias *eref;
1794  int numaliases;
1795  int varattno;
1796  ListCell *lc;
1797 
1798  Assert(pstate != NULL);
1799 
1800  rte->rtekind = RTE_CTE;
1801  rte->ctename = cte->ctename;
1802  rte->ctelevelsup = levelsup;
1803 
1804  /* Self-reference if and only if CTE's parse analysis isn't completed */
1805  rte->self_reference = !IsA(cte->ctequery, Query);
1806  Assert(cte->cterecursive || !rte->self_reference);
1807  /* Bump the CTE's refcount if this isn't a self-reference */
1808  if (!rte->self_reference)
1809  cte->cterefcount++;
1810 
1811  /*
1812  * We throw error if the CTE is INSERT/UPDATE/DELETE without RETURNING.
1813  * This won't get checked in case of a self-reference, but that's OK
1814  * because data-modifying CTEs aren't allowed to be recursive anyhow.
1815  */
1816  if (IsA(cte->ctequery, Query))
1817  {
1818  Query *ctequery = (Query *) cte->ctequery;
1819 
1820  if (ctequery->commandType != CMD_SELECT &&
1821  ctequery->returningList == NIL)
1822  ereport(ERROR,
1823  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1824  errmsg("WITH query \"%s\" does not have a RETURNING clause",
1825  cte->ctename),
1826  parser_errposition(pstate, rv->location)));
1827  }
1828 
1829  rte->coltypes = cte->ctecoltypes;
1830  rte->coltypmods = cte->ctecoltypmods;
1831  rte->colcollations = cte->ctecolcollations;
1832 
1833  rte->alias = alias;
1834  if (alias)
1835  eref = copyObject(alias);
1836  else
1837  eref = makeAlias(refname, NIL);
1838  numaliases = list_length(eref->colnames);
1839 
1840  /* fill in any unspecified alias columns */
1841  varattno = 0;
1842  foreach(lc, cte->ctecolnames)
1843  {
1844  varattno++;
1845  if (varattno > numaliases)
1846  eref->colnames = lappend(eref->colnames, lfirst(lc));
1847  }
1848  if (varattno < numaliases)
1849  ereport(ERROR,
1850  (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
1851  errmsg("table \"%s\" has %d columns available but %d columns specified",
1852  refname, varattno, numaliases)));
1853 
1854  rte->eref = eref;
1855 
1856  /*
1857  * Set flags and access permissions.
1858  *
1859  * Subqueries are never checked for access rights.
1860  */
1861  rte->lateral = false;
1862  rte->inh = false; /* never true for subqueries */
1863  rte->inFromCl = inFromCl;
1864 
1865  rte->requiredPerms = 0;
1866  rte->checkAsUser = InvalidOid;
1867  rte->selectedCols = NULL;
1868  rte->insertedCols = NULL;
1869  rte->updatedCols = NULL;
1870 
1871  /*
1872  * Add completed RTE to pstate's range table list, but not to join list
1873  * nor namespace --- caller must do that if appropriate.
1874  */
1875  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1876 
1877  return rte;
1878 }
#define NIL
Definition: pg_list.h:69
#define IsA(nodeptr, _type_)
Definition: nodes.h:559
Alias * alias
Definition: parsenodes.h:960
List * colnames
Definition: primnodes.h:42
List * coltypmods
Definition: parsenodes.h:954
int errcode(int sqlerrcode)
Definition: elog.c:575
AclMode requiredPerms
Definition: parsenodes.h:965
List * colcollations
Definition: parsenodes.h:955
void * copyObject(const void *from)
Definition: copyfuncs.c:4475
int location
Definition: primnodes.h:72
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define ERROR
Definition: elog.h:43
List * ctecoltypmods
Definition: parsenodes.h:1291
List * returningList
Definition: parsenodes.h:135
#define ereport(elevel, rest)
Definition: elog.h:122
List * lappend(List *list, void *datum)
Definition: list.c:128
List * ctecolnames
Definition: parsenodes.h:1289
bool self_reference
Definition: parsenodes.h:944
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
CmdType commandType
Definition: parsenodes.h:103
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
char * aliasname
Definition: primnodes.h:41
static int list_length(const List *l)
Definition: pg_list.h:89
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
Index ctelevelsup
Definition: parsenodes.h:943
List * ctecoltypes
Definition: parsenodes.h:1290
RTEKind rtekind
Definition: parsenodes.h:882
char * ctename
Definition: parsenodes.h:942
int errmsg(const char *fmt,...)
Definition: elog.c:797
Bitmapset * insertedCols
Definition: parsenodes.h:968
Alias * alias
Definition: primnodes.h:71
Alias * eref
Definition: parsenodes.h:961
List * ctecolcollations
Definition: parsenodes.h:1292
List * coltypes
Definition: parsenodes.h:953
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForFunction ( ParseState pstate,
List funcnames,
List funcexprs,
List coldeflists,
RangeFunction rangefunc,
bool  lateral,
bool  inFromCl 
)

Definition at line 1381 of file parse_relation.c.

References RangeFunction::alias, RangeTblEntry::alias, Alias::aliasname, Assert, buildRelationAliases(), RangeTblEntry::checkAsUser, CheckAttributeNamesTypes(), chooseScalarFunctionAlias(), ColumnDef::colname, CreateTemplateTupleDesc(), RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, exprLocation(), format_type_be(), forthree, RangeTblFunction::funccolcollations, RangeTblFunction::funccolcount, RangeTblFunction::funccolnames, RangeTblFunction::funccoltypes, RangeTblFunction::funccoltypmods, RangeTblFunction::funcexpr, RangeTblEntry::funcordinality, RangeTblFunction::funcparams, RangeTblEntry::functions, get_expr_result_type(), GetColumnDefCollation(), i, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, INT8OID, InvalidOid, lappend(), lappend_int(), lappend_oid(), RangeTblEntry::lateral, lfirst, linitial, list_length(), ColumnDef::location, makeAlias(), makeNode, makeString(), tupleDesc::natts, NIL, NULL, RangeFunction::ordinality, ParseState::p_rtable, palloc(), parser_errposition(), pstrdup(), RangeTblEntry::relid, RELKIND_COMPOSITE_TYPE, RangeTblEntry::requiredPerms, RTE_FUNCTION, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, TypeName::setof, RangeTblEntry::subquery, TupleDescCopyEntry(), TupleDescInitEntry(), TupleDescInitEntryCollation(), TYPEFUNC_COMPOSITE, TYPEFUNC_RECORD, TYPEFUNC_SCALAR, ColumnDef::typeName, typenameTypeIdAndMod(), and RangeTblEntry::updatedCols.

Referenced by transformRangeFunction().

1388 {
1390  Alias *alias = rangefunc->alias;
1391  Alias *eref;
1392  char *aliasname;
1393  int nfuncs = list_length(funcexprs);
1394  TupleDesc *functupdescs;
1395  TupleDesc tupdesc;
1396  ListCell *lc1,
1397  *lc2,
1398  *lc3;
1399  int i;
1400  int j;
1401  int funcno;
1402  int natts,
1403  totalatts;
1404 
1405  Assert(pstate != NULL);
1406 
1407  rte->rtekind = RTE_FUNCTION;
1408  rte->relid = InvalidOid;
1409  rte->subquery = NULL;
1410  rte->functions = NIL; /* we'll fill this list below */
1411  rte->funcordinality = rangefunc->ordinality;
1412  rte->alias = alias;
1413 
1414  /*
1415  * Choose the RTE alias name. We default to using the first function's
1416  * name even when there's more than one; which is maybe arguable but beats
1417  * using something constant like "table".
1418  */
1419  if (alias)
1420  aliasname = alias->aliasname;
1421  else
1422  aliasname = linitial(funcnames);
1423 
1424  eref = makeAlias(aliasname, NIL);
1425  rte->eref = eref;
1426 
1427  /* Process each function ... */
1428  functupdescs = (TupleDesc *) palloc(nfuncs * sizeof(TupleDesc));
1429 
1430  totalatts = 0;
1431  funcno = 0;
1432  forthree(lc1, funcexprs, lc2, funcnames, lc3, coldeflists)
1433  {
1434  Node *funcexpr = (Node *) lfirst(lc1);
1435  char *funcname = (char *) lfirst(lc2);
1436  List *coldeflist = (List *) lfirst(lc3);
1438  TypeFuncClass functypclass;
1439  Oid funcrettype;
1440 
1441  /* Initialize RangeTblFunction node */
1442  rtfunc->funcexpr = funcexpr;
1443  rtfunc->funccolnames = NIL;
1444  rtfunc->funccoltypes = NIL;
1445  rtfunc->funccoltypmods = NIL;
1446  rtfunc->funccolcollations = NIL;
1447  rtfunc->funcparams = NULL; /* not set until planning */
1448 
1449  /*
1450  * Now determine if the function returns a simple or composite type.
1451  */
1452  functypclass = get_expr_result_type(funcexpr,
1453  &funcrettype,
1454  &tupdesc);
1455 
1456  /*
1457  * A coldeflist is required if the function returns RECORD and hasn't
1458  * got a predetermined record type, and is prohibited otherwise.
1459  */
1460  if (coldeflist != NIL)
1461  {
1462  if (functypclass != TYPEFUNC_RECORD)
1463  ereport(ERROR,
1464  (errcode(ERRCODE_SYNTAX_ERROR),
1465  errmsg("a column definition list is only allowed for functions returning \"record\""),
1466  parser_errposition(pstate,
1467  exprLocation((Node *) coldeflist))));
1468  }
1469  else
1470  {
1471  if (functypclass == TYPEFUNC_RECORD)
1472  ereport(ERROR,
1473  (errcode(ERRCODE_SYNTAX_ERROR),
1474  errmsg("a column definition list is required for functions returning \"record\""),
1475  parser_errposition(pstate, exprLocation(funcexpr))));
1476  }
1477 
1478  if (functypclass == TYPEFUNC_COMPOSITE)
1479  {
1480  /* Composite data type, e.g. a table's row type */
1481  Assert(tupdesc);
1482  }
1483  else if (functypclass == TYPEFUNC_SCALAR)
1484  {
1485  /* Base data type, i.e. scalar */
1486  tupdesc = CreateTemplateTupleDesc(1, false);
1487  TupleDescInitEntry(tupdesc,
1488  (AttrNumber) 1,
1489  chooseScalarFunctionAlias(funcexpr, funcname,
1490  alias, nfuncs),
1491  funcrettype,
1492  -1,
1493  0);
1494  }
1495  else if (functypclass == TYPEFUNC_RECORD)
1496  {
1497  ListCell *col;
1498 
1499  /*
1500  * Use the column definition list to construct a tupdesc and fill
1501  * in the RangeTblFunction's lists.
1502  */
1503  tupdesc = CreateTemplateTupleDesc(list_length(coldeflist), false);
1504  i = 1;
1505  foreach(col, coldeflist)
1506  {
1507  ColumnDef *n = (ColumnDef *) lfirst(col);
1508  char *attrname;
1509  Oid attrtype;
1510  int32 attrtypmod;
1511  Oid attrcollation;
1512 
1513  attrname = n->colname;
1514  if (n->typeName->setof)
1515  ereport(ERROR,
1516  (errcode(ERRCODE_INVALID_TABLE_DEFINITION),
1517  errmsg("column \"%s\" cannot be declared SETOF",
1518  attrname),
1519  parser_errposition(pstate, n->location)));
1520  typenameTypeIdAndMod(pstate, n->typeName,
1521  &attrtype, &attrtypmod);
1522  attrcollation = GetColumnDefCollation(pstate, n, attrtype);
1523  TupleDescInitEntry(tupdesc,
1524  (AttrNumber) i,
1525  attrname,
1526  attrtype,
1527  attrtypmod,
1528  0);
1530  (AttrNumber) i,
1531  attrcollation);
1532  rtfunc->funccolnames = lappend(rtfunc->funccolnames,
1533  makeString(pstrdup(attrname)));
1534  rtfunc->funccoltypes = lappend_oid(rtfunc->funccoltypes,
1535  attrtype);
1536  rtfunc->funccoltypmods = lappend_int(rtfunc->funccoltypmods,
1537  attrtypmod);
1539  attrcollation);
1540 
1541  i++;
1542  }
1543 
1544  /*
1545  * Ensure that the coldeflist defines a legal set of names (no
1546  * duplicates) and datatypes (no pseudo-types, for instance).
1547  */
1549  }
1550  else
1551  ereport(ERROR,
1552  (errcode(ERRCODE_DATATYPE_MISMATCH),
1553  errmsg("function \"%s\" in FROM has unsupported return type %s",
1554  funcname, format_type_be(funcrettype)),
1555  parser_errposition(pstate, exprLocation(funcexpr))));
1556 
1557  /* Finish off the RangeTblFunction and add it to the RTE's list */
1558  rtfunc->funccolcount = tupdesc->natts;
1559  rte->functions = lappend(rte->functions, rtfunc);
1560 
1561  /* Save the tupdesc for use below */
1562  functupdescs[funcno] = tupdesc;
1563  totalatts += tupdesc->natts;
1564  funcno++;
1565  }
1566 
1567  /*
1568  * If there's more than one function, or we want an ordinality column, we
1569  * have to produce a merged tupdesc.
1570  */
1571  if (nfuncs > 1 || rangefunc->ordinality)
1572  {
1573  if (rangefunc->ordinality)
1574  totalatts++;
1575 
1576  /* Merge the tuple descs of each function into a composite one */
1577  tupdesc = CreateTemplateTupleDesc(totalatts, false);
1578  natts = 0;
1579  for (i = 0; i < nfuncs; i++)
1580  {
1581  for (j = 1; j <= functupdescs[i]->natts; j++)
1582  TupleDescCopyEntry(tupdesc, ++natts, functupdescs[i], j);
1583  }
1584 
1585  /* Add the ordinality column if needed */
1586  if (rangefunc->ordinality)
1587  TupleDescInitEntry(tupdesc,
1588  (AttrNumber) ++natts,
1589  "ordinality",
1590  INT8OID,
1591  -1,
1592  0);
1593 
1594  Assert(natts == totalatts);
1595  }
1596  else
1597  {
1598  /* We can just use the single function's tupdesc as-is */
1599  tupdesc = functupdescs[0];
1600  }
1601 
1602  /* Use the tupdesc while assigning column aliases for the RTE */
1603  buildRelationAliases(tupdesc, alias, eref);
1604 
1605  /*
1606  * Set flags and access permissions.
1607  *
1608  * Functions are never checked for access rights (at least, not by the RTE
1609  * permissions mechanism).
1610  */
1611  rte->lateral = lateral;
1612  rte->inh = false; /* never true for functions */
1613  rte->inFromCl = inFromCl;
1614 
1615  rte->requiredPerms = 0;
1616  rte->checkAsUser = InvalidOid;
1617  rte->selectedCols = NULL;
1618  rte->insertedCols = NULL;
1619  rte->updatedCols = NULL;
1620 
1621  /*
1622  * Add completed RTE to pstate's range table list, but not to join list
1623  * nor namespace --- caller must do that if appropriate.
1624  */
1625  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1626 
1627  return rte;
1628 }
Value * makeString(char *str)
Definition: value.c:53
#define NIL
Definition: pg_list.h:69
Alias * alias
Definition: parsenodes.h:552
int exprLocation(const Node *expr)
Definition: nodeFuncs.c:1204
void CheckAttributeNamesTypes(TupleDesc tupdesc, char relkind, bool allow_system_table_mods)
Definition: heap.c:407
Alias * alias
Definition: parsenodes.h:960
static char * chooseScalarFunctionAlias(Node *funcexpr, char *funcname, Alias *alias, int nfuncs)
#define forthree(cell1, list1, cell2, list2, cell3, list3)
Definition: pg_list.h:183
char * pstrdup(const char *in)
Definition: mcxt.c:1165
Definition: nodes.h:508
int errcode(int sqlerrcode)
Definition: elog.c:575
char * format_type_be(Oid type_oid)
Definition: format_type.c:94
AclMode requiredPerms
Definition: parsenodes.h:965
List * funccolnames
Definition: parsenodes.h:996
bool funcordinality
Definition: parsenodes.h:932
unsigned int Oid
Definition: postgres_ext.h:31
TypeFuncClass get_expr_result_type(Node *expr, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:227
List * lappend_oid(List *list, Oid datum)
Definition: list.c:164
int natts
Definition: tupdesc.h:73
#define RELKIND_COMPOSITE_TYPE
Definition: pg_class.h:165
signed int int32
Definition: c.h:253
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define linitial(l)
Definition: pg_list.h:110
#define ERROR
Definition: elog.h:43
void TupleDescCopyEntry(TupleDesc dst, AttrNumber dstAttno, TupleDesc src, AttrNumber srcAttno)
Definition: tupdesc.c:229
bool setof
Definition: parsenodes.h:202
void TupleDescInitEntryCollation(TupleDesc desc, AttrNumber attributeNumber, Oid collationid)
Definition: tupdesc.c:650
int location
Definition: parsenodes.h:611
TypeFuncClass
Definition: funcapi.h:150
void TupleDescInitEntry(TupleDesc desc, AttrNumber attributeNumber, const char *attributeName, Oid oidtypeid, int32 typmod, int attdim)
Definition: tupdesc.c:493
#define ereport(elevel, rest)
Definition: elog.h:122
List * lappend_int(List *list, int datum)
Definition: list.c:146
List * lappend(List *list, void *datum)
Definition: list.c:128
Oid GetColumnDefCollation(ParseState *pstate, ColumnDef *coldef, Oid typeOid)
Definition: parse_type.c:521
void typenameTypeIdAndMod(ParseState *pstate, const TypeName *typeName, Oid *typeid_p, int32 *typmod_p)
Definition: parse_type.c:293
#define InvalidOid
Definition: postgres_ext.h:36
List * funccoltypmods
Definition: parsenodes.h:998
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define INT8OID
Definition: pg_type.h:304
List * funccolcollations
Definition: parsenodes.h:999
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
char * aliasname
Definition: primnodes.h:41
List * functions
Definition: parsenodes.h:931
static int list_length(const List *l)
Definition: pg_list.h:89
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
TypeName * typeName
Definition: parsenodes.h:599
Bitmapset * funcparams
Definition: parsenodes.h:1001
TupleDesc CreateTemplateTupleDesc(int natts, bool hasoid)
Definition: tupdesc.c:41
RTEKind rtekind
Definition: parsenodes.h:882
Query * subquery
Definition: parsenodes.h:900
void * palloc(Size size)
Definition: mcxt.c:891
int errmsg(const char *fmt,...)
Definition: elog.c:797
Bitmapset * insertedCols
Definition: parsenodes.h:968
int i
static void buildRelationAliases(TupleDesc tupdesc, Alias *alias, Alias *eref)
List * funccoltypes
Definition: parsenodes.h:997
char * colname
Definition: parsenodes.h:598
Alias * eref
Definition: parsenodes.h:961
Definition: pg_list.h:45
int16 AttrNumber
Definition: attnum.h:21
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForJoin ( ParseState pstate,
List colnames,
JoinType  jointype,
List aliasvars,
Alias alias,
bool  inFromCl 
)

Definition at line 1714 of file parse_relation.c.

References RangeTblEntry::alias, Assert, RangeTblEntry::checkAsUser, Alias::colnames, copyObject(), RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, RangeTblEntry::joinaliasvars, RangeTblEntry::jointype, lappend(), RangeTblEntry::lateral, list_concat(), list_copy_tail(), list_length(), makeAlias(), makeNode, MaxAttrNumber, NIL, NULL, ParseState::p_rtable, RangeTblEntry::relid, RangeTblEntry::requiredPerms, RTE_JOIN, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, RangeTblEntry::subquery, and RangeTblEntry::updatedCols.

Referenced by transformFromClauseItem(), and transformSetOperationStmt().

1720 {
1722  Alias *eref;
1723  int numaliases;
1724 
1725  Assert(pstate != NULL);
1726 
1727  /*
1728  * Fail if join has too many columns --- we must be able to reference any
1729  * of the columns with an AttrNumber.
1730  */
1731  if (list_length(aliasvars) > MaxAttrNumber)
1732  ereport(ERROR,
1733  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
1734  errmsg("joins can have at most %d columns",
1735  MaxAttrNumber)));
1736 
1737  rte->rtekind = RTE_JOIN;
1738  rte->relid = InvalidOid;
1739  rte->subquery = NULL;
1740  rte->jointype = jointype;
1741  rte->joinaliasvars = aliasvars;
1742  rte->alias = alias;
1743 
1744  eref = alias ? (Alias *) copyObject(alias) : makeAlias("unnamed_join", NIL);
1745  numaliases = list_length(eref->colnames);
1746 
1747  /* fill in any unspecified alias columns */
1748  if (numaliases < list_length(colnames))
1749  eref->colnames = list_concat(eref->colnames,
1750  list_copy_tail(colnames, numaliases));
1751 
1752  rte->eref = eref;
1753 
1754  /*
1755  * Set flags and access permissions.
1756  *
1757  * Joins are never checked for access rights.
1758  */
1759  rte->lateral = false;
1760  rte->inh = false; /* never true for joins */
1761  rte->inFromCl = inFromCl;
1762 
1763  rte->requiredPerms = 0;
1764  rte->checkAsUser = InvalidOid;
1765  rte->selectedCols = NULL;
1766  rte->insertedCols = NULL;
1767  rte->updatedCols = NULL;
1768 
1769  /*
1770  * Add completed RTE to pstate's range table list, but not to join list
1771  * nor namespace --- caller must do that if appropriate.
1772  */
1773  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1774 
1775  return rte;
1776 }
#define NIL
Definition: pg_list.h:69
List * joinaliasvars
Definition: parsenodes.h:921
Alias * alias
Definition: parsenodes.h:960
List * colnames
Definition: primnodes.h:42
#define MaxAttrNumber
Definition: attnum.h:24
int errcode(int sqlerrcode)
Definition: elog.c:575
List * list_concat(List *list1, List *list2)
Definition: list.c:321
AclMode requiredPerms
Definition: parsenodes.h:965
List * list_copy_tail(const List *oldlist, int nskip)
Definition: list.c:1203
void * copyObject(const void *from)
Definition: copyfuncs.c:4475
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define ERROR
Definition: elog.h:43
JoinType jointype
Definition: parsenodes.h:920
#define ereport(elevel, rest)
Definition: elog.h:122
List * lappend(List *list, void *datum)
Definition: list.c:128
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
static int list_length(const List *l)
Definition: pg_list.h:89
RTEKind rtekind
Definition: parsenodes.h:882
Query * subquery
Definition: parsenodes.h:900
int errmsg(const char *fmt,...)
Definition: elog.c:797
Bitmapset * insertedCols
Definition: parsenodes.h:968
Alias * eref
Definition: parsenodes.h:961
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForRelation ( ParseState pstate,
Relation  rel,
Alias alias,
bool  inh,
bool  inFromCl 
)

Definition at line 1246 of file parse_relation.c.

References ACL_SELECT, RangeTblEntry::alias, Alias::aliasname, Assert, buildRelationAliases(), RangeTblEntry::checkAsUser, RangeTblEntry::eref, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, lappend(), RangeTblEntry::lateral, makeAlias(), makeNode, NIL, NULL, ParseState::p_rtable, RelationData::rd_att, RelationData::rd_rel, RelationGetRelationName, RelationGetRelid, RangeTblEntry::relid, RangeTblEntry::relkind, RangeTblEntry::requiredPerms, RTE_RELATION, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, and RangeTblEntry::updatedCols.

Referenced by AddRelationNewConstraints(), AlterPolicy(), CreatePolicy(), CreateTrigger(), RemoveRoleFromObjectPolicy(), setTargetTable(), test_rls_hooks_permissive(), test_rls_hooks_restrictive(), transformAlterTableStmt(), transformIndexStmt(), transformOnConflictClause(), transformPartitionSpec(), transformRuleStmt(), and UpdateRangeTableOfViewParse().

1251 {
1253  char *refname = alias ? alias->aliasname : RelationGetRelationName(rel);
1254 
1255  Assert(pstate != NULL);
1256 
1257  rte->rtekind = RTE_RELATION;
1258  rte->alias = alias;
1259  rte->relid = RelationGetRelid(rel);
1260  rte->relkind = rel->rd_rel->relkind;
1261 
1262  /*
1263  * Build the list of effective column names using user-supplied aliases
1264  * and/or actual column names.
1265  */
1266  rte->eref = makeAlias(refname, NIL);
1267  buildRelationAliases(rel->rd_att, alias, rte->eref);
1268 
1269  /*
1270  * Set flags and access permissions.
1271  *
1272  * The initial default on access checks is always check-for-READ-access,
1273  * which is the right thing for all except target tables.
1274  */
1275  rte->lateral = false;
1276  rte->inh = inh;
1277  rte->inFromCl = inFromCl;
1278 
1279  rte->requiredPerms = ACL_SELECT;
1280  rte->checkAsUser = InvalidOid; /* not set-uid by default, either */
1281  rte->selectedCols = NULL;
1282  rte->insertedCols = NULL;
1283  rte->updatedCols = NULL;
1284 
1285  /*
1286  * Add completed RTE to pstate's range table list, but not to join list
1287  * nor namespace --- caller must do that if appropriate.
1288  */
1289  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1290 
1291  return rte;
1292 }
#define NIL
Definition: pg_list.h:69
Alias * alias
Definition: parsenodes.h:960
AclMode requiredPerms
Definition: parsenodes.h:965
Form_pg_class rd_rel
Definition: rel.h:113
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define RelationGetRelationName(relation)
Definition: rel.h:433
List * lappend(List *list, void *datum)
Definition: list.c:128
#define ACL_SELECT
Definition: parsenodes.h:66
TupleDesc rd_att
Definition: rel.h:114
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
char * aliasname
Definition: primnodes.h:41
RTEKind rtekind
Definition: parsenodes.h:882
Bitmapset * insertedCols
Definition: parsenodes.h:968
static void buildRelationAliases(TupleDesc tupdesc, Alias *alias, Alias *eref)
Alias * eref
Definition: parsenodes.h:961
#define RelationGetRelid(relation)
Definition: rel.h:413
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForSubquery ( ParseState pstate,
Query subquery,
Alias alias,
bool  lateral,
bool  inFromCl 
)

Definition at line 1301 of file parse_relation.c.

References RangeTblEntry::alias, Alias::aliasname, Assert, RangeTblEntry::checkAsUser, Alias::colnames, copyObject(), RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, lappend(), RangeTblEntry::lateral, lfirst, list_length(), makeNode, makeString(), NULL, ParseState::p_rtable, pstrdup(), RangeTblEntry::relid, RangeTblEntry::requiredPerms, TargetEntry::resjunk, TargetEntry::resname, TargetEntry::resno, RTE_SUBQUERY, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, RangeTblEntry::subquery, Query::targetList, and RangeTblEntry::updatedCols.

Referenced by convert_ANY_sublink_to_join(), transformInsertStmt(), transformRangeSubselect(), and transformSetOperationTree().

1306 {
1308  char *refname = alias->aliasname;
1309  Alias *eref;
1310  int numaliases;
1311  int varattno;
1312  ListCell *tlistitem;
1313 
1314  Assert(pstate != NULL);
1315 
1316  rte->rtekind = RTE_SUBQUERY;
1317  rte->relid = InvalidOid;
1318  rte->subquery = subquery;
1319  rte->alias = alias;
1320 
1321  eref = copyObject(alias);
1322  numaliases = list_length(eref->colnames);
1323 
1324  /* fill in any unspecified alias columns */
1325  varattno = 0;
1326  foreach(tlistitem, subquery->targetList)
1327  {
1328  TargetEntry *te = (TargetEntry *) lfirst(tlistitem);
1329 
1330  if (te->resjunk)
1331  continue;
1332  varattno++;
1333  Assert(varattno == te->resno);
1334  if (varattno > numaliases)
1335  {
1336  char *attrname;
1337 
1338  attrname = pstrdup(te->resname);
1339  eref->colnames = lappend(eref->colnames, makeString(attrname));
1340  }
1341  }
1342  if (varattno < numaliases)
1343  ereport(ERROR,
1344  (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
1345  errmsg("table \"%s\" has %d columns available but %d columns specified",
1346  refname, varattno, numaliases)));
1347 
1348  rte->eref = eref;
1349 
1350  /*
1351  * Set flags and access permissions.
1352  *
1353  * Subqueries are never checked for access rights.
1354  */
1355  rte->lateral = lateral;
1356  rte->inh = false; /* never true for subqueries */
1357  rte->inFromCl = inFromCl;
1358 
1359  rte->requiredPerms = 0;
1360  rte->checkAsUser = InvalidOid;
1361  rte->selectedCols = NULL;
1362  rte->insertedCols = NULL;
1363  rte->updatedCols = NULL;
1364 
1365  /*
1366  * Add completed RTE to pstate's range table list, but not to join list
1367  * nor namespace --- caller must do that if appropriate.
1368  */
1369  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1370 
1371  return rte;
1372 }
Value * makeString(char *str)
Definition: value.c:53
Alias * alias
Definition: parsenodes.h:960
List * colnames
Definition: primnodes.h:42
char * pstrdup(const char *in)
Definition: mcxt.c:1165
int errcode(int sqlerrcode)
Definition: elog.c:575
AclMode requiredPerms
Definition: parsenodes.h:965
char * resname
Definition: primnodes.h:1332
List * targetList
Definition: parsenodes.h:131
void * copyObject(const void *from)
Definition: copyfuncs.c:4475
Bitmapset * selectedCols
Definition: parsenodes.h:967
bool resjunk
Definition: primnodes.h:1337
#define ERROR
Definition: elog.h:43
AttrNumber resno
Definition: primnodes.h:1331
#define ereport(elevel, rest)
Definition: elog.h:122
List * lappend(List *list, void *datum)
Definition: list.c:128
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
char * aliasname
Definition: primnodes.h:41
static int list_length(const List *l)
Definition: pg_list.h:89
RTEKind rtekind
Definition: parsenodes.h:882
Query * subquery
Definition: parsenodes.h:900
int errmsg(const char *fmt,...)
Definition: elog.c:797
Bitmapset * insertedCols
Definition: parsenodes.h:968
Alias * eref
Definition: parsenodes.h:961
List * p_rtable
Definition: parse_node.h:168
RangeTblEntry* addRangeTableEntryForValues ( ParseState pstate,
List exprs,
List coltypes,
List coltypmods,
List colcollations,
Alias alias,
bool  lateral,
bool  inFromCl 
)

Definition at line 1636 of file parse_relation.c.

References RangeTblEntry::alias, Alias::aliasname, Assert, RangeTblEntry::checkAsUser, RangeTblEntry::colcollations, Alias::colnames, RangeTblEntry::coltypes, RangeTblEntry::coltypmods, copyObject(), RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, RangeTblEntry::inFromCl, RangeTblEntry::inh, RangeTblEntry::insertedCols, InvalidOid, lappend(), RangeTblEntry::lateral, linitial, list_length(), makeAlias(), makeNode, makeString(), NIL, NULL, ParseState::p_rtable, pstrdup(), RangeTblEntry::relid, RangeTblEntry::requiredPerms, RTE_VALUES, RangeTblEntry::rtekind, RangeTblEntry::selectedCols, snprintf(), RangeTblEntry::subquery, RangeTblEntry::updatedCols, and RangeTblEntry::values_lists.

Referenced by transformValuesClause().

1644 {
1646  char *refname = alias ? alias->aliasname : pstrdup("*VALUES*");
1647  Alias *eref;
1648  int numaliases;
1649  int numcolumns;
1650 
1651  Assert(pstate != NULL);
1652 
1653  rte->rtekind = RTE_VALUES;
1654  rte->relid = InvalidOid;
1655  rte->subquery = NULL;
1656  rte->values_lists = exprs;
1657  rte->coltypes = coltypes;
1658  rte->coltypmods = coltypmods;
1659  rte->colcollations = colcollations;
1660  rte->alias = alias;
1661 
1662  eref = alias ? copyObject(alias) : makeAlias(refname, NIL);
1663 
1664  /* fill in any unspecified alias columns */
1665  numcolumns = list_length((List *) linitial(exprs));
1666  numaliases = list_length(eref->colnames);
1667  while (numaliases < numcolumns)
1668  {
1669  char attrname[64];
1670 
1671  numaliases++;
1672  snprintf(attrname, sizeof(attrname), "column%d", numaliases);
1673  eref->colnames = lappend(eref->colnames,
1674  makeString(pstrdup(attrname)));
1675  }
1676  if (numcolumns < numaliases)
1677  ereport(ERROR,
1678  (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
1679  errmsg("VALUES lists \"%s\" have %d columns available but %d columns specified",
1680  refname, numcolumns, numaliases)));
1681 
1682  rte->eref = eref;
1683 
1684  /*
1685  * Set flags and access permissions.
1686  *
1687  * Subqueries are never checked for access rights.
1688  */
1689  rte->lateral = lateral;
1690  rte->inh = false; /* never true for values RTEs */
1691  rte->inFromCl = inFromCl;
1692 
1693  rte->requiredPerms = 0;
1694  rte->checkAsUser = InvalidOid;
1695  rte->selectedCols = NULL;
1696  rte->insertedCols = NULL;
1697  rte->updatedCols = NULL;
1698 
1699  /*
1700  * Add completed RTE to pstate's range table list, but not to join list
1701  * nor namespace --- caller must do that if appropriate.
1702  */
1703  pstate->p_rtable = lappend(pstate->p_rtable, rte);
1704 
1705  return rte;
1706 }
Value * makeString(char *str)
Definition: value.c:53
#define NIL
Definition: pg_list.h:69
Alias * alias
Definition: parsenodes.h:960
List * colnames
Definition: primnodes.h:42
char * pstrdup(const char *in)
Definition: mcxt.c:1165
List * coltypmods
Definition: parsenodes.h:954
int errcode(int sqlerrcode)
Definition: elog.c:575
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
AclMode requiredPerms
Definition: parsenodes.h:965
List * colcollations
Definition: parsenodes.h:955
List * values_lists
Definition: parsenodes.h:937
void * copyObject(const void *from)
Definition: copyfuncs.c:4475
Alias * makeAlias(const char *aliasname, List *colnames)
Definition: makefuncs.c:384
Bitmapset * selectedCols
Definition: parsenodes.h:967
#define linitial(l)
Definition: pg_list.h:110
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
List * lappend(List *list, void *datum)
Definition: list.c:128
#define InvalidOid
Definition: postgres_ext.h:36
Bitmapset * updatedCols
Definition: parsenodes.h:969
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
char * aliasname
Definition: primnodes.h:41
static int list_length(const List *l)
Definition: pg_list.h:89
RTEKind rtekind
Definition: parsenodes.h:882
Query * subquery
Definition: parsenodes.h:900
int errmsg(const char *fmt,...)
Definition: elog.c:797
Bitmapset * insertedCols
Definition: parsenodes.h:968
Alias * eref
Definition: parsenodes.h:961
List * coltypes
Definition: parsenodes.h:953
Definition: pg_list.h:45
List * p_rtable
Definition: parse_node.h:168
void addRTEtoQuery ( ParseState pstate,
RangeTblEntry rte,
bool  addToJoinList,
bool  addToRelNameSpace,
bool  addToVarNameSpace 
)

Definition at line 1939 of file parse_relation.c.

References lappend(), makeNode, NULL, ParseNamespaceItem::p_cols_visible, ParseState::p_joinlist, ParseNamespaceItem::p_lateral_ok, ParseNamespaceItem::p_lateral_only, ParseState::p_namespace, ParseNamespaceItem::p_rel_visible, ParseNamespaceItem::p_rte, palloc(), RTERangeTablePosn(), and RangeTblRef::rtindex.

Referenced by AddRelationNewConstraints(), AlterPolicy(), CreatePolicy(), CreateTrigger(), setTargetTable(), test_rls_hooks_permissive(), test_rls_hooks_restrictive(), transformAlterTableStmt(), transformIndexStmt(), transformOnConflictArbiter(), transformOnConflictClause(), transformPartitionSpec(), transformRuleStmt(), transformSetOperationStmt(), and transformValuesClause().

1942 {
1943  if (addToJoinList)
1944  {
1945  int rtindex = RTERangeTablePosn(pstate, rte, NULL);
1947 
1948  rtr->rtindex = rtindex;
1949  pstate->p_joinlist = lappend(pstate->p_joinlist, rtr);
1950  }
1951  if (addToRelNameSpace || addToVarNameSpace)
1952  {
1953  ParseNamespaceItem *nsitem;
1954 
1955  nsitem = (ParseNamespaceItem *) palloc(sizeof(ParseNamespaceItem));
1956  nsitem->p_rte = rte;
1957  nsitem->p_rel_visible = addToRelNameSpace;
1958  nsitem->p_cols_visible = addToVarNameSpace;
1959  nsitem->p_lateral_only = false;
1960  nsitem->p_lateral_ok = true;
1961  pstate->p_namespace = lappend(pstate->p_namespace, nsitem);
1962  }
1963 }
RangeTblEntry * p_rte
Definition: parse_node.h:238
List * p_namespace
Definition: parse_node.h:172
List * lappend(List *list, void *datum)
Definition: list.c:128
#define makeNode(_type_)
Definition: nodes.h:556
#define NULL
Definition: c.h:226
int RTERangeTablePosn(ParseState *pstate, RangeTblEntry *rte, int *sublevels_up)
void * palloc(Size size)
Definition: mcxt.c:891
List * p_joinlist
Definition: parse_node.h:170
int attnameAttNum ( Relation  rd,
const char *  attname,
bool  sysColOK 
)

Definition at line 2828 of file parse_relation.c.

References tupleDesc::attrs, i, InvalidAttrNumber, namestrcmp(), ObjectIdAttributeNumber, RelationData::rd_att, RelationData::rd_rel, and specialAttNum().

Referenced by checkInsertTargets(), CreateTrigger(), do_analyze_rel(), and transformUpdateTargetList().

2829 {
2830  int i;
2831 
2832  for (i = 0; i < rd->rd_rel->relnatts; i++)
2833  {
2834  Form_pg_attribute att = rd->rd_att->attrs[i];
2835 
2836  if (namestrcmp(&(att->attname), attname) == 0 && !att->attisdropped)
2837  return i + 1;
2838  }
2839 
2840  if (sysColOK)
2841  {
2842  if ((i = specialAttNum(attname)) != InvalidAttrNumber)
2843  {
2844  if (i != ObjectIdAttributeNumber || rd->rd_rel->relhasoids)
2845  return i;
2846  }
2847  }
2848 
2849  /* on failure */
2850  return InvalidAttrNumber;
2851 }
#define ObjectIdAttributeNumber
Definition: sysattr.h:22
Form_pg_attribute * attrs
Definition: tupdesc.h:74
int namestrcmp(Name name, const char *str)
Definition: name.c:248
static int specialAttNum(const char *attname)
Form_pg_class rd_rel
Definition: rel.h:113
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
TupleDesc rd_att
Definition: rel.h:114
#define InvalidAttrNumber
Definition: attnum.h:23
int i
Name attnumAttName ( Relation  rd,
int  attid 
)

Definition at line 2883 of file parse_relation.c.

References tupleDesc::attrs, elog, ERROR, tupleDesc::natts, RelationData::rd_att, RelationData::rd_rel, and SystemAttributeDefinition().

Referenced by transformFkeyGetPrimaryKey().

2884 {
2885  if (attid <= 0)
2886  {
2887  Form_pg_attribute sysatt;
2888 
2889  sysatt = SystemAttributeDefinition(attid, rd->rd_rel->relhasoids);
2890  return &sysatt->attname;
2891  }
2892  if (attid > rd->rd_att->natts)
2893  elog(ERROR, "invalid attribute number %d", attid);
2894  return &rd->rd_att->attrs[attid - 1]->attname;
2895 }
Form_pg_attribute * attrs
Definition: tupdesc.h:74
Form_pg_class rd_rel
Definition: rel.h:113
int natts
Definition: tupdesc.h:73
#define ERROR
Definition: elog.h:43
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
TupleDesc rd_att
Definition: rel.h:114
Form_pg_attribute SystemAttributeDefinition(AttrNumber attno, bool relhasoids)
Definition: heap.c:198
#define elog
Definition: elog.h:219
Oid attnumCollationId ( Relation  rd,
int  attid 
)

Definition at line 2925 of file parse_relation.c.

References tupleDesc::attrs, elog, ERROR, InvalidOid, tupleDesc::natts, and RelationData::rd_att.

2926 {
2927  if (attid <= 0)
2928  {
2929  /* All system attributes are of noncollatable types. */
2930  return InvalidOid;
2931  }
2932  if (attid > rd->rd_att->natts)
2933  elog(ERROR, "invalid attribute number %d", attid);
2934  return rd->rd_att->attrs[attid - 1]->attcollation;
2935 }
Form_pg_attribute * attrs
Definition: tupdesc.h:74
int natts
Definition: tupdesc.h:73
#define ERROR
Definition: elog.h:43
TupleDesc rd_att
Definition: rel.h:114
#define InvalidOid
Definition: postgres_ext.h:36
#define elog
Definition: elog.h:219
Oid attnumTypeId ( Relation  rd,
int  attid 
)

Definition at line 2905 of file parse_relation.c.

References tupleDesc::attrs, elog, ERROR, tupleDesc::natts, RelationData::rd_att, RelationData::rd_rel, and SystemAttributeDefinition().

Referenced by refresh_by_match_merge(), transformAssignedExpr(), and transformFkeyGetPrimaryKey().

2906 {
2907  if (attid <= 0)
2908  {
2909  Form_pg_attribute sysatt;
2910 
2911  sysatt = SystemAttributeDefinition(attid, rd->rd_rel->relhasoids);
2912  return sysatt->atttypid;
2913  }
2914  if (attid > rd->rd_att->natts)
2915  elog(ERROR, "invalid attribute number %d", attid);
2916  return rd->rd_att->attrs[attid - 1]->atttypid;
2917 }
Form_pg_attribute * attrs
Definition: tupdesc.h:74
Form_pg_class rd_rel
Definition: rel.h:113
int natts
Definition: tupdesc.h:73
#define ERROR
Definition: elog.h:43
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:184
TupleDesc rd_att
Definition: rel.h:114
Form_pg_attribute SystemAttributeDefinition(AttrNumber attno, bool relhasoids)
Definition: heap.c:198
#define elog
Definition: elog.h:219
void checkNameSpaceConflicts ( ParseState pstate,
List namespace1,
List namespace2 
)

Definition at line 368 of file parse_relation.c.

References RangeTblEntry::alias, Alias::aliasname, RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, lfirst, NULL, ParseNamespaceItem::p_rel_visible, ParseNamespaceItem::p_rte, RangeTblEntry::relid, RTE_RELATION, and RangeTblEntry::rtekind.

Referenced by transformFromClause(), and transformFromClauseItem().

370 {
371  ListCell *l1;
372 
373  foreach(l1, namespace1)
374  {
375  ParseNamespaceItem *nsitem1 = (ParseNamespaceItem *) lfirst(l1);
376  RangeTblEntry *rte1 = nsitem1->p_rte;
377  const char *aliasname1 = rte1->eref->aliasname;
378  ListCell *l2;
379 
380  if (!nsitem1->p_rel_visible)
381  continue;
382 
383  foreach(l2, namespace2)
384  {
385  ParseNamespaceItem *nsitem2 = (ParseNamespaceItem *) lfirst(l2);
386  RangeTblEntry *rte2 = nsitem2->p_rte;
387 
388  if (!nsitem2->p_rel_visible)
389  continue;
390  if (strcmp(rte2->eref->aliasname, aliasname1) != 0)
391  continue; /* definitely no conflict */
392  if (rte1->rtekind == RTE_RELATION && rte1->alias == NULL &&
393  rte2->rtekind == RTE_RELATION && rte2->alias == NULL &&
394  rte1->relid != rte2->relid)
395  continue; /* no conflict per SQL rule */
396  ereport(ERROR,
397  (errcode(ERRCODE_DUPLICATE_ALIAS),
398  errmsg("table name \"%s\" specified more than once",
399  aliasname1)));
400  }
401  }
402 }
Alias * alias
Definition: parsenodes.h:960
int errcode(int sqlerrcode)
Definition: elog.c:575
RangeTblEntry * p_rte
Definition: parse_node.h:238
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
char * aliasname
Definition: primnodes.h:41
RTEKind rtekind
Definition: parsenodes.h:882
int errmsg(const char *fmt,...)
Definition: elog.c:797
Alias * eref
Definition: parsenodes.h:961
Node* colNameToVar ( ParseState pstate,
char *  colname,
bool  localonly,
int  location 
)

Definition at line 736 of file parse_relation.c.

References check_lateral_ref_ok(), ereport, errcode(), errmsg(), ERROR, lfirst, NULL, ParseNamespaceItem::p_cols_visible, ParseState::p_lateral_active, ParseNamespaceItem::p_lateral_only, ParseState::p_namespace, ParseNamespaceItem::p_rte, ParseState::parentParseState, parser_errposition(), and scanRTEForColumn().

Referenced by findTargetlistEntrySQL92(), and transformColumnRef().

738 {
739  Node *result = NULL;
740  ParseState *orig_pstate = pstate;
741 
742  while (pstate != NULL)
743  {
744  ListCell *l;
745 
746  foreach(l, pstate->p_namespace)
747  {
749  RangeTblEntry *rte = nsitem->p_rte;
750  Node *newresult;
751 
752  /* Ignore table-only items */
753  if (!nsitem->p_cols_visible)
754  continue;
755  /* If not inside LATERAL, ignore lateral-only items */
756  if (nsitem->p_lateral_only && !pstate->p_lateral_active)
757  continue;
758 
759  /* use orig_pstate here to get the right sublevels_up */
760  newresult = scanRTEForColumn(orig_pstate, rte, colname, location,
761  0, NULL);
762 
763  if (newresult)
764  {
765  if (result)
766  ereport(ERROR,
767  (errcode(ERRCODE_AMBIGUOUS_COLUMN),
768  errmsg("column reference \"%s\" is ambiguous",
769  colname),
770  parser_errposition(pstate, location)));
771  check_lateral_ref_ok(pstate, nsitem, location);
772  result = newresult;
773  }
774  }
775 
776  if (result != NULL || localonly)
777  break; /* found, or don't want to look at parent */
778 
779  pstate = pstate->parentParseState;
780  }
781 
782  return result;
783 }
Node * scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte, char *colname, int location, int fuzzy_rte_penalty, FuzzyAttrMatchState *fuzzystate)
Definition: nodes.h:508
int errcode(int sqlerrcode)
Definition: elog.c:575
RangeTblEntry * p_rte
Definition: parse_node.h:238
#define ERROR
Definition: elog.h:43
static void check_lateral_ref_ok(ParseState *pstate, ParseNamespaceItem *nsitem, int location)
List * p_namespace
Definition: parse_node.h:172
#define ereport(elevel, rest)
Definition: elog.h:122
struct ParseState * parentParseState
Definition: parse_node.h:166
bool p_lateral_active
Definition: parse_node.h:174
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
int errmsg(const char *fmt,...)
Definition: elog.c:797
void errorMissingColumn ( ParseState pstate,
char *  relname,
char *  colname,
int  location 
)

Definition at line 3000 of file parse_relation.c.

References Alias::aliasname, AttributeNumberIsValid, Alias::colnames, RangeTblEntry::eref, ereport, errcode(), errhint(), errmsg(), ERROR, FuzzyAttrMatchState::first, list_nth(), NULL, parser_errposition(), FuzzyAttrMatchState::rfirst, FuzzyAttrMatchState::rsecond, searchRangeTableForCol(), FuzzyAttrMatchState::second, and strVal.

Referenced by transformColumnRef().

3002 {
3004  char *closestfirst = NULL;
3005 
3006  /*
3007  * Search the entire rtable looking for possible matches. If we find one,
3008  * emit a hint about it.
3009  *
3010  * TODO: improve this code (and also errorMissingRTE) to mention using
3011  * LATERAL if appropriate.
3012  */
3013  state = searchRangeTableForCol(pstate, relname, colname, location);
3014 
3015  /*
3016  * Extract closest col string for best match, if any.
3017  *
3018  * Infer an exact match referenced despite not being visible from the fact
3019  * that an attribute number was not present in state passed back -- this
3020  * is what is reported when !closestfirst. There might also be an exact
3021  * match that was qualified with an incorrect alias, in which case
3022  * closestfirst will be set (so hint is the same as generic fuzzy case).
3023  */
3024  if (state->rfirst && AttributeNumberIsValid(state->first))
3025  closestfirst = strVal(list_nth(state->rfirst->eref->colnames,
3026  state->first - 1));
3027 
3028  if (!state->rsecond)
3029  {
3030  /*
3031  * Handle case where there is zero or one column suggestions to hint,
3032  * including exact matches referenced but not visible.
3033  */
3034  ereport(ERROR,
3035  (errcode(ERRCODE_UNDEFINED_COLUMN),
3036  relname ?
3037  errmsg("column %s.%s does not exist", relname, colname) :
3038  errmsg("column \"%s\" does not exist", colname),
3039  state->rfirst ? closestfirst ?
3040  errhint("Perhaps you meant to reference the column \"%s.%s\".",
3041  state->rfirst->eref->aliasname, closestfirst) :
3042  errhint("There is a column named \"%s\" in table \"%s\", but it cannot be referenced from this part of the query.",
3043  colname, state->rfirst->eref->aliasname) : 0,
3044  parser_errposition(pstate, location)));
3045  }
3046  else
3047  {
3048  /* Handle case where there are two equally useful column hints */
3049  char *closestsecond;
3050 
3051  closestsecond = strVal(list_nth(state->rsecond->eref->colnames,
3052  state->second - 1));
3053 
3054  ereport(ERROR,
3055  (errcode(ERRCODE_UNDEFINED_COLUMN),
3056  relname ?
3057  errmsg("column %s.%s does not exist", relname, colname) :
3058  errmsg("column \"%s\" does not exist", colname),
3059  errhint("Perhaps you meant to reference the column \"%s.%s\" or the column \"%s.%s\".",
3060  state->rfirst->eref->aliasname, closestfirst,
3061  state->rsecond->eref->aliasname, closestsecond),
3062  parser_errposition(pstate, location)));
3063  }
3064 }
int errhint(const char *fmt,...)
Definition: elog.c:987
List * colnames
Definition: primnodes.h:42
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
RangeTblEntry * rfirst
void * list_nth(const List *list, int n)
Definition: list.c:410
#define ereport(elevel, rest)
Definition: elog.h:122
#define AttributeNumberIsValid(attributeNumber)
Definition: attnum.h:34
#define NULL
Definition: c.h:226
char * aliasname
Definition: primnodes.h:41
Definition: regguts.h:298
RangeTblEntry * rsecond
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
int errmsg(const char *fmt,...)
Definition: elog.c:797
Alias * eref
Definition: parsenodes.h:961
static FuzzyAttrMatchState * searchRangeTableForCol(ParseState *pstate, const char *alias, char *colname, int location)
void errorMissingRTE ( ParseState pstate,
RangeVar relation 
)

Definition at line 2944 of file parse_relation.c.

References RangeTblEntry::alias, Alias::aliasname, RangeTblEntry::eref, ereport, errcode(), ERRCODE_UNDEFINED_TABLE, errhint(), errmsg(), ERROR, RangeVar::location, NULL, parser_errposition(), refnameRangeTblEntry(), RangeVar::relname, and searchRangeTableForRel().

Referenced by ExpandColumnRefStar(), and transformColumnRef().

2945 {
2946  RangeTblEntry *rte;
2947  int sublevels_up;
2948  const char *badAlias = NULL;
2949 
2950  /*
2951  * Check to see if there are any potential matches in the query's
2952  * rangetable. (Note: cases involving a bad schema name in the RangeVar
2953  * will throw error immediately here. That seems OK.)
2954  */
2955  rte = searchRangeTableForRel(pstate, relation);
2956 
2957  /*
2958  * If we found a match that has an alias and the alias is visible in the
2959  * namespace, then the problem is probably use of the relation's real name
2960  * instead of its alias, ie "SELECT foo.* FROM foo f". This mistake is
2961  * common enough to justify a specific hint.
2962  *
2963  * If we found a match that doesn't meet those criteria, assume the
2964  * problem is illegal use of a relation outside its scope, as in the
2965  * MySQL-ism "SELECT ... FROM a, b LEFT JOIN c ON (a.x = c.y)".
2966  */
2967  if (rte && rte->alias &&
2968  strcmp(rte->eref->aliasname, relation->relname) != 0 &&
2969  refnameRangeTblEntry(pstate, NULL, rte->eref->aliasname,
2970  relation->location,
2971  &sublevels_up) == rte)
2972  badAlias = rte->eref->aliasname;
2973 
2974  if (rte)
2975  ereport(ERROR,
2977  errmsg("invalid reference to FROM-clause entry for table \"%s\"",
2978  relation->relname),
2979  (badAlias ?
2980  errhint("Perhaps you meant to reference the table alias \"%s\".",
2981  badAlias) :
2982  errhint("There is an entry for table \"%s\", but it cannot be referenced from this part of the query.",
2983  rte->eref->aliasname)),
2984  parser_errposition(pstate, relation->location)));
2985  else
2986  ereport(ERROR,
2988  errmsg("missing FROM-clause entry for table \"%s\"",
2989  relation->relname),
2990  parser_errposition(pstate, relation->location)));
2991 }
int errhint(const char *fmt,...)
Definition: elog.c:987
#define ERRCODE_UNDEFINED_TABLE
Definition: pgbench.c:61
Alias * alias
Definition: parsenodes.h:960
int errcode(int sqlerrcode)
Definition: elog.c:575
RangeTblEntry * refnameRangeTblEntry(ParseState *pstate, const char *schemaname, const char *refname, int location, int *sublevels_up)
int location
Definition: primnodes.h:72
char * relname
Definition: primnodes.h:67
static RangeTblEntry * searchRangeTableForRel(ParseState *pstate, RangeVar *relation)
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
#define NULL
Definition: c.h:226
char * aliasname
Definition: primnodes.h:41
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
int errmsg(const char *fmt,...)
Definition: elog.c:797
Alias * eref
Definition: parsenodes.h:961
List* expandRelAttrs ( ParseState pstate,
RangeTblEntry rte,
int  rtindex,
int  sublevels_up,
int  location 
)

Definition at line 2395 of file parse_relation.c.

References ACL_SELECT, Assert, expandRTE(), forboth, label, lappend(), lfirst, makeTargetEntry(), markVarForSelectPriv(), name, NIL, NULL, ParseState::p_next_resno, RangeTblEntry::requiredPerms, and strVal.

Referenced by ExpandAllTables(), ExpandSingleTable(), and transformValuesClause().

2397 {
2398  List *names,
2399  *vars;
2400  ListCell *name,
2401  *var;
2402  List *te_list = NIL;
2403 
2404  expandRTE(rte, rtindex, sublevels_up, location, false,
2405  &names, &vars);
2406 
2407  /*
2408  * Require read access to the table. This is normally redundant with the
2409  * markVarForSelectPriv calls below, but not if the table has zero
2410  * columns.
2411  */
2412  rte->requiredPerms |= ACL_SELECT;
2413 
2414  forboth(name, names, var, vars)
2415  {
2416  char *label = strVal(lfirst(name));
2417  Var *varnode = (Var *) lfirst(var);
2418  TargetEntry *te;
2419 
2420  te = makeTargetEntry((Expr *) varnode,
2421  (AttrNumber) pstate->p_next_resno++,
2422  label,
2423  false);
2424  te_list = lappend(te_list, te);
2425 
2426  /* Require read access to each column */
2427  markVarForSelectPriv(pstate, varnode, rte);
2428  }
2429 
2430  Assert(name == NULL && var == NULL); /* lists not the same length? */
2431 
2432  return te_list;
2433 }
#define NIL
Definition: pg_list.h:69
#define forboth(cell1, list1, cell2, list2)
Definition: pg_list.h:174
void markVarForSelectPriv(ParseState *pstate, Var *var, RangeTblEntry *rte)
#define strVal(v)
Definition: value.h:54
AclMode requiredPerms
Definition: parsenodes.h:965
Definition: primnodes.h:141
int p_next_resno
Definition: parse_node.h:183
TargetEntry * makeTargetEntry(Expr *expr, AttrNumber resno, char *resname, bool resjunk)
Definition: makefuncs.c:235
List * lappend(List *list, void *datum)
Definition: list.c:128
void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up, int location, bool include_dropped, List **colnames, List **colvars)
#define ACL_SELECT
Definition: parsenodes.h:66
static char * label
Definition: pg_basebackup.c:83
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
const char * name
Definition: encode.c:521
Definition: regcomp.c:226
Definition: pg_list.h:45
int16 AttrNumber
Definition: attnum.h:21
void expandRTE ( RangeTblEntry rte,
int  rtindex,
int  sublevels_up,
int  location,
bool  include_dropped,
List **  colnames,
List **  colvars 
)

Definition at line 1983 of file parse_relation.c.

References Assert, RangeTblEntry::colcollations, Alias::colnames, RangeTblEntry::coltypes, RangeTblEntry::coltypmods, elog, RangeTblEntry::eref, ERROR, expandRelation(), expandTupleDesc(), TargetEntry::expr, exprCollation(), exprType(), exprTypmod(), forboth, forthree, RangeTblFunction::funccolcollations, RangeTblFunction::funccolcount, RangeTblFunction::funccoltypes, RangeTblFunction::funccoltypmods, RangeTblFunction::funcexpr, RangeTblEntry::funcordinality, RangeTblEntry::functions, get_expr_result_type(), INT4OID, INT8OID, InvalidOid, RangeTblEntry::joinaliasvars, label, lappend(), lfirst, lfirst_int, lfirst_oid, list_concat(), list_copy_tail(), list_head(), list_length(), list_nth(), list_truncate(), llast, lnext, Var::location, makeNullConst(), makeString(), makeVar(), NIL, NULL, pstrdup(), RangeTblEntry::relid, TargetEntry::resjunk, TargetEntry::resno, RTE_CTE, RTE_FUNCTION, RTE_JOIN, RTE_RELATION, RTE_SUBQUERY, RTE_VALUES, RangeTblEntry::rtekind, strVal, RangeTblEntry::subquery, Query::targetList, TYPEFUNC_COMPOSITE, TYPEFUNC_RECORD, and TYPEFUNC_SCALAR.

Referenced by build_physical_tlist(), coerce_record_to_complex(), expandRecordVariable(), expandRelAttrs(), ExpandSingleTable(), pullup_replace_vars_callback(), ReplaceVarsFromTargetList_callback(), and transformFromClauseItem().

1986 {
1987  int varattno;
1988 
1989  if (colnames)
1990  *colnames = NIL;
1991  if (colvars)
1992  *colvars = NIL;
1993 
1994  switch (rte->rtekind)
1995  {
1996  case RTE_RELATION:
1997  /* Ordinary relation RTE */
1998  expandRelation(rte->relid, rte->eref,
1999  rtindex, sublevels_up, location,
2000  include_dropped, colnames, colvars);
2001  break;
2002  case RTE_SUBQUERY:
2003  {
2004  /* Subquery RTE */
2005  ListCell *aliasp_item = list_head(rte->eref->colnames);
2006  ListCell *tlistitem;
2007 
2008  varattno = 0;
2009  foreach(tlistitem, rte->subquery->targetList)
2010  {
2011  TargetEntry *te = (TargetEntry *) lfirst(tlistitem);
2012 
2013  if (te->resjunk)
2014  continue;
2015  varattno++;
2016  Assert(varattno == te->resno);
2017 
2018  if (colnames)
2019  {
2020  /* Assume there is one alias per target item */
2021  char *label = strVal(lfirst(aliasp_item));
2022 
2023  *colnames = lappend(*colnames, makeString(pstrdup(label)));
2024  aliasp_item = lnext(aliasp_item);
2025  }
2026 
2027  if (colvars)
2028  {
2029  Var *varnode;
2030 
2031  varnode = makeVar(rtindex, varattno,
2032  exprType((Node *) te->expr),
2033  exprTypmod((Node *) te->expr),
2034  exprCollation((Node *) te->expr),
2035  sublevels_up);
2036  varnode->location = location;
2037 
2038  *colvars = lappend(*colvars, varnode);
2039  }
2040  }
2041  }
2042  break;
2043  case RTE_FUNCTION:
2044  {
2045  /* Function RTE */
2046  int atts_done = 0;
2047  ListCell *lc;
2048 
2049  foreach(lc, rte->functions)
2050  {
2051  RangeTblFunction *rtfunc = (RangeTblFunction *) lfirst(lc);
2052  TypeFuncClass functypclass;
2053  Oid funcrettype;
2054  TupleDesc tupdesc;
2055 
2056  functypclass = get_expr_result_type(rtfunc->funcexpr,
2057  &funcrettype,
2058  &tupdesc);
2059  if (functypclass == TYPEFUNC_COMPOSITE)
2060  {
2061  /* Composite data type, e.g. a table's row type */
2062  Assert(tupdesc);
2063  expandTupleDesc(tupdesc, rte->eref,
2064  rtfunc->funccolcount, atts_done,
2065  rtindex, sublevels_up, location,
2066  include_dropped, colnames, colvars);
2067  }
2068  else if (functypclass == TYPEFUNC_SCALAR)
2069  {
2070  /* Base data type, i.e. scalar */
2071  if (colnames)
2072  *colnames = lappend(*colnames,
2073  list_nth(rte->eref->colnames,
2074  atts_done));
2075 
2076  if (colvars)
2077  {
2078  Var *varnode;
2079 
2080  varnode = makeVar(rtindex, atts_done + 1,
2081  funcrettype, -1,
2082  exprCollation(rtfunc->funcexpr),
2083  sublevels_up);
2084  varnode->location = location;
2085 
2086  *colvars = lappend(*colvars, varnode);
2087  }
2088  }
2089  else if (functypclass == TYPEFUNC_RECORD)
2090  {
2091  if (colnames)
2092  {
2093  List *namelist;
2094 
2095  /* extract appropriate subset of column list */
2096  namelist = list_copy_tail(rte->eref->colnames,
2097  atts_done);
2098  namelist = list_truncate(namelist,
2099  rtfunc->funccolcount);
2100  *colnames = list_concat(*colnames, namelist);
2101  }
2102 
2103  if (colvars)
2104  {
2105  ListCell *l1;
2106  ListCell *l2;
2107  ListCell *l3;
2108  int attnum = atts_done;
2109 
2110  forthree(l1, rtfunc->funccoltypes,
2111  l2, rtfunc->funccoltypmods,
2112  l3, rtfunc->funccolcollations)
2113  {
2114  Oid attrtype = lfirst_oid(l1);
2115  int32 attrtypmod = lfirst_int(l2);
2116  Oid attrcollation = lfirst_oid(l3);
2117  Var *varnode;
2118 
2119  attnum++;
2120  varnode = makeVar(rtindex,
2121  attnum,
2122  attrtype,
2123  attrtypmod,
2124  attrcollation,
2125  sublevels_up);
2126  varnode->location = location;
2127  *colvars = lappend(*colvars, varnode);
2128  }
2129  }
2130  }
2131  else
2132  {
2133  /* addRangeTableEntryForFunction should've caught this */
2134  elog(ERROR, "function in FROM has unsupported return type");
2135  }
2136  atts_done += rtfunc->funccolcount;
2137  }
2138 
2139  /* Append the ordinality column if any */
2140  if (rte->funcordinality)
2141  {
2142  if (colnames)
2143  *colnames = lappend(*colnames,
2144  llast(rte->eref->colnames));
2145 
2146  if (colvars)
2147  {
2148  Var *varnode = makeVar(rtindex,
2149  atts_done + 1,
2150  INT8OID,
2151  -1,
2152  InvalidOid,
2153  sublevels_up);
2154 
2155  *colvars = lappend(*colvars, varnode);
2156  }
2157  }
2158  }
2159  break;
2160  case RTE_JOIN:
2161  {
2162  /* Join RTE */
2163  ListCell *colname;
2164  ListCell *aliasvar;
2165 
2167 
2168  varattno = 0;
2169  forboth(colname, rte->eref->colnames, aliasvar, rte->joinaliasvars)
2170  {
2171  Node *avar = (Node *) lfirst(aliasvar);
2172 
2173  varattno++;
2174 
2175  /*
2176  * During ordinary parsing, there will never be any
2177  * deleted columns in the join; but we have to check since
2178  * this routine is also used by the rewriter, and joins
2179  * found in stored rules might have join columns for
2180  * since-deleted columns. This will be signaled by a null
2181  * pointer in the alias-vars list.
2182  */
2183  if (avar == NULL)
2184  {
2185  if (include_dropped)
2186  {
2187  if (colnames)
2188  *colnames = lappend(*colnames,
2189  makeString(pstrdup("")));
2190  if (colvars)
2191  {
2192  /*
2193  * Can't use join's column type here (it might
2194  * be dropped!); but it doesn't really matter
2195  * what type the Const claims to be.
2196  */
2197  *colvars = lappend(*colvars,
2198  makeNullConst(INT4OID, -1,
2199  InvalidOid));
2200  }
2201  }
2202  continue;
2203  }
2204 
2205  if (colnames)
2206  {
2207  char *label = strVal(lfirst(colname));
2208 
2209  *colnames = lappend(*colnames,
2210  makeString(pstrdup(label)));
2211  }
2212 
2213  if (colvars)
2214  {
2215  Var *varnode;
2216 
2217  varnode = makeVar(rtindex, varattno,
2218  exprType(avar),
2219  exprTypmod(avar),
2220  exprCollation(avar),
2221  sublevels_up);
2222  varnode->location = location;
2223 
2224  *colvars = lappend(*colvars, varnode);
2225  }
2226  }
2227  }
2228  break;
2229  case RTE_VALUES:
2230  case RTE_CTE:
2231  {
2232  /* Values or CTE RTE */
2233  ListCell *aliasp_item = list_head(rte->eref->colnames);
2234  ListCell *lct;
2235  ListCell *lcm;
2236  ListCell *lcc;
2237 
2238  varattno = 0;
2239  forthree(lct, rte->coltypes,
2240  lcm, rte->coltypmods,
2241  lcc, rte->colcollations)
2242  {
2243  Oid coltype = lfirst_oid(lct);
2244  int32 coltypmod = lfirst_int(lcm);
2245  Oid colcoll = lfirst_oid(lcc);
2246 
2247  varattno++;
2248 
2249  if (colnames)
2250  {
2251  /* Assume there is one alias per output column */
2252  char *label = strVal(lfirst(aliasp_item));
2253 
2254  *colnames = lappend(*colnames,
2255  makeString(pstrdup(label)));
2256  aliasp_item = lnext(aliasp_item);
2257  }
2258 
2259  if (colvars)
2260  {
2261  Var *varnode;
2262 
2263  varnode = makeVar(rtindex, varattno,
2264  coltype, coltypmod, colcoll,
2265  sublevels_up);
2266  varnode->location = location;
2267 
2268  *colvars = lappend(*colvars, varnode);
2269  }
2270  }
2271  }
2272  break;
2273  default:
2274  elog(ERROR, "unrecognized RTE kind: %d", (int) rte->rtekind);
2275  }
2276 }
Value * makeString(char *str)
Definition: value.c:53
#define NIL
Definition: pg_list.h:69
List * joinaliasvars
Definition: parsenodes.h:921
#define forboth(cell1, list1, cell2, list2)
Definition: pg_list.h:174
List * colnames
Definition: primnodes.h:42
int32 exprTypmod(const Node *expr)
Definition: nodeFuncs.c:273
#define forthree(cell1, list1, cell2, list2, cell3, list3)
Definition: pg_list.h:183
char * pstrdup(const char *in)
Definition: mcxt.c:1165
List * coltypmods
Definition: parsenodes.h:954
#define llast(l)
Definition: pg_list.h:126
List * list_truncate(List *list, int new_size)
Definition: list.c:350
#define INT4OID
Definition: pg_type.h:316
Definition: nodes.h:508
#define strVal(v)
Definition: value.h:54
List * list_concat(List *list1, List *list2)
Definition: list.c:321
List * list_copy_tail(const List *oldlist, int nskip)
Definition: list.c:1203
bool funcordinality
Definition: parsenodes.h:932
unsigned int Oid
Definition: postgres_ext.h:31
Definition: primnodes.h:141
TypeFuncClass get_expr_result_type(Node *expr, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:227
List * colcollations
Definition: parsenodes.h:955
signed int int32
Definition: c.h:253
List * targetList
Definition: parsenodes.h:131
Const * makeNullConst(Oid consttype, int32 consttypmod, Oid constcollid)
Definition: makefuncs.c:334
bool resjunk
Definition: primnodes.h:1337
#define ERROR
Definition: elog.h:43
#define lfirst_int(lc)
Definition: pg_list.h:107
int location
Definition: primnodes.h:156
void * list_nth(const List *list, int n)
Definition: list.c:410
AttrNumber resno
Definition: primnodes.h:1331
static ListCell * list_head(const List *l)
Definition: pg_list.h:77
TypeFuncClass
Definition: funcapi.h:150
#define lnext(lc)
Definition: pg_list.h:105
Var * makeVar(Index varno, AttrNumber varattno, Oid vartype, int32 vartypmod, Oid varcollid, Index varlevelsup)
Definition: makefuncs.c:67
static void expandRelation(Oid relid, Alias *eref, int rtindex, int sublevels_up, int location, bool include_dropped, List **colnames, List **colvars)
List * lappend(List *list, void *datum)
Definition: list.c:128
static char * label
Definition: pg_basebackup.c:83
#define InvalidOid
Definition: postgres_ext.h:36
List * funccoltypmods
Definition: parsenodes.h:998
#define INT8OID
Definition: pg_type.h:304
List * funccolcollations
Definition: parsenodes.h:999
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
List * functions
Definition: parsenodes.h:931
Expr * expr
Definition: primnodes.h:1330
Oid exprType(const Node *expr)
Definition: nodeFuncs.c:42
static int list_length(const List *l)
Definition: pg_list.h:89
Oid exprCollation(const Node *expr)
Definition: nodeFuncs.c:745
static void expandTupleDesc(TupleDesc tupdesc, Alias *eref, int count, int offset, int rtindex, int sublevels_up, int location, bool include_dropped, List **colnames, List **colvars)
RTEKind rtekind
Definition: parsenodes.h:882
Query * subquery
Definition: parsenodes.h:900
List * funccoltypes
Definition: parsenodes.h:997
#define elog
Definition: elog.h:219
Alias * eref
Definition: parsenodes.h:961
List * coltypes
Definition: parsenodes.h:953
Definition: pg_list.h:45
#define lfirst_oid(lc)
Definition: pg_list.h:108
CommonTableExpr* GetCTEForRTE ( ParseState pstate,
RangeTblEntry rte,
int  rtelevelsup 
)

Definition at line 496 of file parse_relation.c.

References Assert, RangeTblEntry::ctelevelsup, RangeTblEntry::ctename, CommonTableExpr::ctename, elog, ERROR, lfirst, NULL, ParseState::p_ctenamespace, ParseState::parentParseState, RTE_CTE, RangeTblEntry::rtekind, and RTERangeTablePosn().

Referenced by expandRecordVariable(), and markTargetListOrigin().

497 {
498  Index levelsup;
499  ListCell *lc;
500 
501  /* Determine RTE's levelsup if caller didn't know it */
502  if (rtelevelsup < 0)
503  (void) RTERangeTablePosn(pstate, rte, &rtelevelsup);
504 
505  Assert(rte->rtekind == RTE_CTE);
506  levelsup = rte->ctelevelsup + rtelevelsup;
507  while (levelsup-- > 0)
508  {
509  pstate = pstate->parentParseState;
510  if (!pstate) /* shouldn't happen */
511  elog(ERROR, "bad levelsup for CTE \"%s\"", rte->ctename);
512  }
513  foreach(lc, pstate->p_ctenamespace)
514  {
515  CommonTableExpr *cte = (CommonTableExpr *) lfirst(lc);
516 
517  if (strcmp(cte->ctename, rte->ctename) == 0)
518  return cte;
519  }
520  /* shouldn't happen */
521  elog(ERROR, "could not find CTE \"%s\"", rte->ctename);
522  return NULL; /* keep compiler quiet */
523 }
#define ERROR
Definition: elog.h:43
struct ParseState * parentParseState
Definition: parse_node.h:166
unsigned int Index
Definition: c.h:362
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
#define lfirst(lc)
Definition: pg_list.h:106
Index ctelevelsup
Definition: parsenodes.h:943
int RTERangeTablePosn(ParseState *pstate, RangeTblEntry *rte, int *sublevels_up)
RTEKind rtekind
Definition: parsenodes.h:882
char * ctename
Definition: parsenodes.h:942
List * p_ctenamespace
Definition: parse_node.h:175
#define elog
Definition: elog.h:219
RangeTblEntry* GetRTEByRangeTablePosn ( ParseState pstate,
int  varno,
int  sublevels_up 
)

Definition at line 475 of file parse_relation.c.

References Assert, list_length(), NULL, ParseState::p_rtable, ParseState::parentParseState, and rt_fetch.

Referenced by coerce_record_to_complex(), count_rowexpr_columns(), expandRecordVariable(), ExpandRowReference(), markTargetListOrigin(), ParseComplexProjection(), and unknown_attribute().

478 {
479  while (sublevels_up-- > 0)
480  {
481  pstate = pstate->parentParseState;
482  Assert(pstate != NULL);
483  }
484  Assert(varno > 0 && varno <= list_length(pstate->p_rtable));
485  return rt_fetch(varno, pstate->p_rtable);
486 }
#define rt_fetch(rangetable_index, rangetable)
Definition: parsetree.h:31
struct ParseState * parentParseState
Definition: parse_node.h:166
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:671
static int list_length(const List *l)
Definition: pg_list.h:89
List * p_rtable
Definition: parse_node.h:168
bool isLockedRefname ( ParseState pstate,
const char *  refname 
)

Definition at line 1891 of file parse_relation.c.

References lfirst, LockingClause::lockedRels, NIL, ParseState::p_locked_from_parent, ParseState::p_locking_clause, and RangeVar::relname.

Referenced by addRangeTableEntry(), and transformRangeSubselect().

1892 {
1893  ListCell *l;
1894 
1895  /*
1896  * If we are in a subquery specified as locked FOR UPDATE/SHARE from
1897  * parent level, then act as though there's a generic FOR UPDATE here.
1898  */
1899  if (pstate->p_locked_from_parent)
1900  return true;
1901 
1902  foreach(l, pstate->p_locking_clause)
1903  {
1904  LockingClause *lc = (LockingClause *) lfirst(l);
1905 
1906  if (lc->lockedRels == NIL)
1907  {
1908  /* all tables used in query */
1909  return true;
1910  }
1911  else
1912  {
1913  /* just the named tables */
1914  ListCell *l2;
1915 
1916  foreach(l2, lc->lockedRels)
1917  {
1918  RangeVar *thisrel = (RangeVar *) lfirst(l2);
1919 
1920  if (strcmp(refname, thisrel->relname) == 0)
1921  return true;
1922  }
1923  }
1924  }
1925  return false;
1926 }
List * lockedRels
Definition: parsenodes.h:693
#define NIL
Definition: pg_list.h:69
bool p_locked_from_parent
Definition: parse_node.h:186
char * relname
Definition: primnodes.h:67
List * p_locking_clause
Definition: parse_node.h:185
#define lfirst(lc)
Definition: pg_list.h:106
bool isQueryUsingTempRelation ( Query query)

Definition at line 3072 of file parse_relation.c.

References isQueryUsingTempRelation_walker(), and NULL.

Referenced by DefineView(), and transformCreateTableAsStmt().

3073 {
3074  return isQueryUsingTempRelation_walker((Node *) query, NULL);
3075 }
static bool isQueryUsingTempRelation_walker(Node *node, void *context)
Definition: nodes.h:508
#define NULL
Definition: c.h:226
void markVarForSelectPriv ( ParseState pstate,
Var var,
RangeTblEntry rte 
)

Definition at line 982 of file parse_relation.c.

References Assert, IsA, markRTEForSelectPriv(), ParseState::parentParseState, Var::varattno, Var::varlevelsup, and Var::varno.

Referenced by expandRelAttrs(), ExpandSingleTable(), markRTEForSelectPriv(), scanRTEForColumn(), transformJoinUsingClause(), and transformWholeRowRef().

983 {
984  Index lv;
985 
986  Assert(IsA(var, Var));
987  /* Find the appropriate pstate if it's an uplevel Var */
988  for (lv = 0; lv < var->varlevelsup; lv++)
989  pstate = pstate->parentParseState;
990  markRTEForSelectPriv(pstate, rte, var->varno, var->varattno);
991 }
#define IsA(nodeptr, _type_)
Definition: nodes.h:559
Index varlevelsup
Definition: primnodes.h:151
AttrNumber varattno
Definition: primnodes.h:146
Definition: primnodes.h:141
static void markRTEForSelectPriv(ParseState *pstate, RangeTblEntry *rte, int rtindex, AttrNumber col)
Index varno
Definition: primnodes.h:144
struct ParseState * parentParseState
Definition: parse_node.h:166
unsigned int Index
Definition: c.h:362
#define Assert(condition)
Definition: c.h:671
Relation parserOpenTable ( ParseState pstate,
const RangeVar relation,
int  lockmode 
)

Definition at line 1125 of file parse_relation.c.

References cancel_parser_errposition_callback(), ereport, errcode(), ERRCODE_UNDEFINED_TABLE, errdetail(), errhint(), errmsg(), ERROR, heap_openrv_extended(), isFutureCTE(), RangeVar::location, NULL, RangeVar::relname, RangeVar::schemaname, and setup_parser_errposition_callback().

Referenced by addRangeTableEntry(), and setTargetTable().

1126 {
1127  Relation rel;
1128  ParseCallbackState pcbstate;
1129 
1130  setup_parser_errposition_callback(&pcbstate, pstate, relation->location);
1131  rel = heap_openrv_extended(relation, lockmode, true);
1132  if (rel == NULL)
1133  {
1134  if (relation->schemaname)
1135  ereport(ERROR,
1137  errmsg("relation \"%s.%s\" does not exist",
1138  relation->schemaname, relation->relname)));
1139  else
1140  {
1141  /*
1142  * An unqualified name might have been meant as a reference to
1143  * some not-yet-in-scope CTE. The bare "does not exist" message
1144  * has proven remarkably unhelpful for figuring out such problems,
1145  * so we take pains to offer a specific hint.
1146  */
1147  if (isFutureCTE(pstate, relation->relname))
1148  ereport(ERROR,
1150  errmsg("relation \"%s\" does not exist",
1151  relation->relname),
1152  errdetail("There is a WITH item named \"%s\", but it cannot be referenced from this part of the query.",
1153  relation->relname),
1154  errhint("Use WITH RECURSIVE, or re-order the WITH items to remove forward references.")));
1155  else
1156  ereport(ERROR,
1158  errmsg("relation \"%s\" does not exist",
1159  relation->relname)));
1160  }
1161  }
1163  return rel;
1164 }
int errhint(const char *fmt,...)
Definition: elog.c:987
#define ERRCODE_UNDEFINED_TABLE
Definition: pgbench.c:61
static bool isFutureCTE(ParseState *pstate, const char *refname)
int errcode(int sqlerrcode)
Definition: elog.c:575
char * schemaname
Definition: primnodes.h:66
int location
Definition: primnodes.h:72
char * relname
Definition: primnodes.h:67
Relation heap_openrv_extended(const RangeVar *relation, LOCKMODE lockmode, bool missing_ok)
Definition: heapam.c:1344
void cancel_parser_errposition_callback(ParseCallbackState *pcbstate)
Definition: parse_node.c:159
#define ERROR
Definition: elog.h:43
int errdetail(const char *fmt,...)
Definition: elog.c:873
#define ereport(elevel, rest)
Definition: elog.h:122
void setup_parser_errposition_callback(ParseCallbackState *pcbstate, ParseState *pstate, int location)
Definition: parse_node.c:143
#define NULL
Definition: c.h:226
int errmsg(const char *fmt,...)
Definition: elog.c:797
RangeTblEntry* refnameRangeTblEntry ( ParseState pstate,
const char *  schemaname,
const char *  refname,
int  location,
int *  sublevels_up 
)

Definition at line 82 of file parse_relation.c.

References get_relname_relid(), InvalidOid, LookupNamespaceNoError(), NULL, OidIsValid, ParseState::parentParseState, scanNameSpaceForRefname(), and scanNameSpaceForRelid().

Referenced by errorMissingRTE(), ExpandColumnRefStar(), and transformColumnRef().

87 {
88  Oid relId = InvalidOid;
89 
90  if (sublevels_up)
91  *sublevels_up = 0;
92 
93  if (schemaname != NULL)
94  {
95  Oid namespaceId;
96 
97  /*
98  * We can use LookupNamespaceNoError() here because we are only
99  * interested in finding existing RTEs. Checking USAGE permission on
100  * the schema is unnecessary since it would have already been checked
101  * when the RTE was made. Furthermore, we want to report "RTE not
102  * found", not "no permissions for schema", if the name happens to
103  * match a schema name the user hasn't got access to.
104  */
105  namespaceId = LookupNamespaceNoError(schemaname);
106  if (!OidIsValid(namespaceId))
107  return NULL;
108  relId = get_relname_relid(refname, namespaceId);
109  if (!OidIsValid(relId))
110  return NULL;
111  }
112 
113  while (pstate != NULL)
114  {
115  RangeTblEntry *result;
116 
117  if (OidIsValid(relId))
118  result = scanNameSpaceForRelid(pstate, relId, location);
119  else
120  result = scanNameSpaceForRefname(pstate, refname, location);
121 
122  if (result)
123  return result;
124 
125  if (sublevels_up)
126  (*sublevels_up)++;
127  else
128  break;
129 
130  pstate = pstate->parentParseState;
131  }
132  return NULL;
133 }
static RangeTblEntry * scanNameSpaceForRefname(ParseState *pstate, const char *refname, int location)
unsigned int Oid
Definition: postgres_ext.h:31
#define OidIsValid(objectId)
Definition: c.h:534
Oid get_relname_relid(const char *relname, Oid relnamespace)
Definition: lsyscache.c:1651
struct ParseState * parentParseState
Definition: parse_node.h:166
static RangeTblEntry * scanNameSpaceForRelid(ParseState *pstate, Oid relid, int location)
#define InvalidOid
Definition: postgres_ext.h:36
#define NULL
Definition: c.h:226
Oid LookupNamespaceNoError(const char *nspname)
Definition: namespace.c:2657
int RTERangeTablePosn ( ParseState pstate,
RangeTblEntry rte,
int *  sublevels_up 
)

Definition at line 442 of file parse_relation.c.

References elog, ERROR, lfirst, NULL, ParseState::p_rtable, and ParseState::parentParseState.

Referenced by addRTEtoQuery(), ExpandAllTables(), ExpandSingleTable(), GetCTEForRTE(), make_var(), transformCurrentOfExpr(), and transformWholeRowRef().

443 {
444  int index;
445  ListCell *l;
446 
447  if (sublevels_up)
448  *sublevels_up = 0;
449 
450  while (pstate != NULL)
451  {
452  index = 1;
453  foreach(l, pstate->p_rtable)
454  {
455  if (rte == (RangeTblEntry *) lfirst(l))
456  return index;
457  index++;
458  }
459  pstate = pstate->parentParseState;
460  if (sublevels_up)
461  (*sublevels_up)++;
462  else
463  break;
464  }
465 
466  elog(ERROR, "RTE not found (internal error)");
467  return 0; /* keep compiler quiet */
468 }
Definition: type.h:90
#define ERROR
Definition: elog.h:43
struct ParseState * parentParseState
Definition: parse_node.h:166
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
#define elog
Definition: elog.h:219
List * p_rtable
Definition: parse_node.h:168
CommonTableExpr* scanNameSpaceForCTE ( ParseState pstate,
const char *  refname,
Index ctelevelsup 
)

Definition at line 236 of file parse_relation.c.

References CommonTableExpr::ctename, lfirst, NULL, ParseState::p_ctenamespace, and ParseState::parentParseState.

Referenced by searchRangeTableForRel(), and transformFromClauseItem().

238 {
239  Index levelsup;
240 
241  for (levelsup = 0;
242  pstate != NULL;
243  pstate = pstate->parentParseState, levelsup++)
244  {
245  ListCell *lc;
246 
247  foreach(lc, pstate->p_ctenamespace)
248  {
249  CommonTableExpr *cte = (CommonTableExpr *) lfirst(lc);
250 
251  if (strcmp(cte->ctename, refname) == 0)
252  {
253  *ctelevelsup = levelsup;
254  return cte;
255  }
256  }
257  }
258  return NULL;
259 }
struct ParseState * parentParseState
Definition: parse_node.h:166
unsigned int Index
Definition: c.h:362
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
List * p_ctenamespace
Definition: parse_node.h:175
Node* scanRTEForColumn ( ParseState pstate,
RangeTblEntry rte,
char *  colname,
int  location,
int  fuzzy_rte_penalty,
FuzzyAttrMatchState fuzzystate 
)

Definition at line 634 of file parse_relation.c.

References ATTNUM, Alias::colnames, RangeTblEntry::eref, ereport, errcode(), errmsg(), ERROR, EXPR_KIND_CHECK_CONSTRAINT, Int16GetDatum, InvalidAttrNumber, lfirst, make_var(), markVarForSelectPriv(), NULL, ObjectIdGetDatum, ParseState::p_expr_kind, parser_errposition(), RangeTblEntry::relid, RangeTblEntry::relkind, RELKIND_COMPOSITE_TYPE, RTE_RELATION, RangeTblEntry::rtekind, SearchSysCacheExists2, specialAttNum(), strVal, TableOidAttributeNumber, and updateFuzzyAttrMatchState().

Referenced by colNameToVar(), ParseComplexProjection(), searchRangeTableForCol(), and transformColumnRef().

637 {
638  Node *result = NULL;
639  int attnum = 0;
640  Var *var;
641  ListCell *c;
642 
643  /*
644  * Scan the user column names (or aliases) for a match. Complain if
645  * multiple matches.
646  *
647  * Note: eref->colnames may include entries for dropped columns, but those
648  * will be empty strings that cannot match any legal SQL identifier, so we
649  * don't bother to test for that case here.
650  *
651  * Should this somehow go wrong and we try to access a dropped column,
652  * we'll still catch it by virtue of the checks in
653  * get_rte_attribute_type(), which is called by make_var(). That routine
654  * has to do a cache lookup anyway, so the check there is cheap. Callers
655  * interested in finding match with shortest distance need to defend
656  * against this directly, though.
657  */
658  foreach(c, rte->eref->colnames)
659  {
660  const char *attcolname = strVal(lfirst(c));
661 
662  attnum++;
663  if (strcmp(attcolname, colname) == 0)
664  {
665  if (result)
666  ereport(ERROR,
667  (errcode(ERRCODE_AMBIGUOUS_COLUMN),
668  errmsg("column reference \"%s\" is ambiguous",
669  colname),
670  parser_errposition(pstate, location)));
671  var = make_var(pstate, rte, attnum, location);
672  /* Require read access to the column */
673  markVarForSelectPriv(pstate, var, rte);
674  result = (Node *) var;
675  }
676 
677  /* Updating fuzzy match state, if provided. */
678  if (fuzzystate != NULL)
679  updateFuzzyAttrMatchState(fuzzy_rte_penalty, fuzzystate,
680  rte, attcolname, colname, attnum);
681  }
682 
683  /*
684  * If we have a unique match, return it. Note that this allows a user
685  * alias to override a system column name (such as OID) without error.
686  */
687  if (result)
688  return result;
689 
690  /*
691  * If the RTE represents a real relation, consider system column names.
692  * Composites are only used for pseudo-relations like ON CONFLICT's
693  * excluded.
694  */
695  if (rte->rtekind == RTE_RELATION &&
697  {
698  /* quick check to see if name could be a system column */
699  attnum = specialAttNum(colname);
700 
701  /* In constraint check, no system column is allowed except tableOid */
702  if (pstate->p_expr_kind == EXPR_KIND_CHECK_CONSTRAINT &&
703  attnum < InvalidAttrNumber && attnum != TableOidAttributeNumber)
704  ereport(ERROR,
705  (errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
706  errmsg("system column \"%s\" reference in check constraint is invalid",
707  colname),
708  parser_errposition(pstate, location)));
709 
710  if (attnum != InvalidAttrNumber)
711  {
712  /* now check to see if column actually is defined */
714  ObjectIdGetDatum(rte->relid),
715  Int16GetDatum(attnum)))
716  {
717  var = make_var(pstate, rte, attnum, location);
718  /* Require read access to the column */
719  markVarForSelectPriv(pstate, var, rte);
720  result = (Node *) var;
721  }
722  }
723  }
724 
725  return result;
726 }
List * colnames
Definition: primnodes.h:42
void markVarForSelectPriv(ParseState *pstate, Var *var, RangeTblEntry *rte)
static void updateFuzzyAttrMatchState(int fuzzy_rte_penalty, FuzzyAttrMatchState *fuzzystate, RangeTblEntry *rte, const char *actual, const char *match, int attnum)
#define Int16GetDatum(X)
Definition: postgres.h:459
Definition: nodes.h:508
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
static int specialAttNum(const char *attname)
Definition: primnodes.h:141
#define RELKIND_COMPOSITE_TYPE
Definition: pg_class.h:165
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
char * c
#define TableOidAttributeNumber
Definition: sysattr.h:27
#define ereport(elevel, rest)
Definition: elog.h:122
ParseExprKind p_expr_kind
Definition: parse_node.h:182
Var * make_var(ParseState *pstate, RangeTblEntry *rte, int attrno, int location)
Definition: parse_node.c:187
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
int parser_errposition(ParseState *pstate, int location)
Definition: parse_node.c:109
#define SearchSysCacheExists2(cacheId, key1, key2)
Definition: syscache.h:169
#define InvalidAttrNumber
Definition: attnum.h:23
RTEKind rtekind
Definition: parsenodes.h:882
int errmsg(const char *fmt,...)
Definition: elog.c:797
Alias * eref
Definition: parsenodes.h:961