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rel.h
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1 /*-------------------------------------------------------------------------
2  *
3  * rel.h
4  * POSTGRES relation descriptor (a/k/a relcache entry) definitions.
5  *
6  *
7  * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/utils/rel.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef REL_H
15 #define REL_H
16 
17 #include "access/tupdesc.h"
18 #include "access/xlog.h"
19 #include "catalog/catalog.h"
20 #include "catalog/pg_class.h"
21 #include "catalog/pg_index.h"
22 #include "catalog/pg_publication.h"
23 #include "nodes/bitmapset.h"
24 #include "partitioning/partdefs.h"
25 #include "rewrite/prs2lock.h"
26 #include "storage/block.h"
27 #include "storage/relfilelocator.h"
28 #include "storage/smgr.h"
29 #include "utils/relcache.h"
30 #include "utils/reltrigger.h"
31 
32 
33 /*
34  * LockRelId and LockInfo really belong to lmgr.h, but it's more convenient
35  * to declare them here so we can have a LockInfoData field in a Relation.
36  */
37 
38 typedef struct LockRelId
39 {
40  Oid relId; /* a relation identifier */
41  Oid dbId; /* a database identifier */
43 
44 typedef struct LockInfoData
45 {
48 
50 
51 /*
52  * Here are the contents of a relation cache entry.
53  */
54 
55 typedef struct RelationData
56 {
57  RelFileLocator rd_locator; /* relation physical identifier */
58  SMgrRelation rd_smgr; /* cached file handle, or NULL */
59  int rd_refcnt; /* reference count */
60  ProcNumber rd_backend; /* owning backend's proc number, if temp rel */
61  bool rd_islocaltemp; /* rel is a temp rel of this session */
62  bool rd_isnailed; /* rel is nailed in cache */
63  bool rd_isvalid; /* relcache entry is valid */
64  bool rd_indexvalid; /* is rd_indexlist valid? (also rd_pkindex and
65  * rd_replidindex) */
66  bool rd_statvalid; /* is rd_statlist valid? */
67 
68  /*----------
69  * rd_createSubid is the ID of the highest subtransaction the rel has
70  * survived into or zero if the rel or its storage was created before the
71  * current top transaction. (IndexStmt.oldNumber leads to the case of a new
72  * rel with an old rd_locator.) rd_firstRelfilelocatorSubid is the ID of the
73  * highest subtransaction an rd_locator change has survived into or zero if
74  * rd_locator matches the value it had at the start of the current top
75  * transaction. (Rolling back the subtransaction that
76  * rd_firstRelfilelocatorSubid denotes would restore rd_locator to the value it
77  * had at the start of the current top transaction. Rolling back any
78  * lower subtransaction would not.) Their accuracy is critical to
79  * RelationNeedsWAL().
80  *
81  * rd_newRelfilelocatorSubid is the ID of the highest subtransaction the
82  * most-recent relfilenumber change has survived into or zero if not changed
83  * in the current transaction (or we have forgotten changing it). This
84  * field is accurate when non-zero, but it can be zero when a relation has
85  * multiple new relfilenumbers within a single transaction, with one of them
86  * occurring in a subsequently aborted subtransaction, e.g.
87  * BEGIN;
88  * TRUNCATE t;
89  * SAVEPOINT save;
90  * TRUNCATE t;
91  * ROLLBACK TO save;
92  * -- rd_newRelfilelocatorSubid is now forgotten
93  *
94  * If every rd_*Subid field is zero, they are read-only outside
95  * relcache.c. Files that trigger rd_locator changes by updating
96  * pg_class.reltablespace and/or pg_class.relfilenode call
97  * RelationAssumeNewRelfilelocator() to update rd_*Subid.
98  *
99  * rd_droppedSubid is the ID of the highest subtransaction that a drop of
100  * the rel has survived into. In entries visible outside relcache.c, this
101  * is always zero.
102  */
103  SubTransactionId rd_createSubid; /* rel was created in current xact */
104  SubTransactionId rd_newRelfilelocatorSubid; /* highest subxact changing
105  * rd_locator to current value */
107  * changing rd_locator to
108  * any value */
109  SubTransactionId rd_droppedSubid; /* dropped with another Subid set */
110 
111  Form_pg_class rd_rel; /* RELATION tuple */
112  TupleDesc rd_att; /* tuple descriptor */
113  Oid rd_id; /* relation's object id */
114  LockInfoData rd_lockInfo; /* lock mgr's info for locking relation */
115  RuleLock *rd_rules; /* rewrite rules */
116  MemoryContext rd_rulescxt; /* private memory cxt for rd_rules, if any */
117  TriggerDesc *trigdesc; /* Trigger info, or NULL if rel has none */
118  /* use "struct" here to avoid needing to include rowsecurity.h: */
119  struct RowSecurityDesc *rd_rsdesc; /* row security policies, or NULL */
120 
121  /* data managed by RelationGetFKeyList: */
122  List *rd_fkeylist; /* list of ForeignKeyCacheInfo (see below) */
123  bool rd_fkeyvalid; /* true if list has been computed */
124 
125  /* data managed by RelationGetPartitionKey: */
126  PartitionKey rd_partkey; /* partition key, or NULL */
127  MemoryContext rd_partkeycxt; /* private context for rd_partkey, if any */
128 
129  /* data managed by RelationGetPartitionDesc: */
130  PartitionDesc rd_partdesc; /* partition descriptor, or NULL */
131  MemoryContext rd_pdcxt; /* private context for rd_partdesc, if any */
132 
133  /* Same as above, for partdescs that omit detached partitions */
134  PartitionDesc rd_partdesc_nodetached; /* partdesc w/o detached parts */
135  MemoryContext rd_pddcxt; /* for rd_partdesc_nodetached, if any */
136 
137  /*
138  * pg_inherits.xmin of the partition that was excluded in
139  * rd_partdesc_nodetached. This informs a future user of that partdesc:
140  * if this value is not in progress for the active snapshot, then the
141  * partdesc can be used, otherwise they have to build a new one. (This
142  * matches what find_inheritance_children_extended would do).
143  */
145 
146  /* data managed by RelationGetPartitionQual: */
147  List *rd_partcheck; /* partition CHECK quals */
148  bool rd_partcheckvalid; /* true if list has been computed */
149  MemoryContext rd_partcheckcxt; /* private cxt for rd_partcheck, if any */
150 
151  /* data managed by RelationGetIndexList: */
152  List *rd_indexlist; /* list of OIDs of indexes on relation */
153  Oid rd_pkindex; /* OID of (deferrable?) primary key, if any */
154  bool rd_ispkdeferrable; /* is rd_pkindex a deferrable PK? */
155  Oid rd_replidindex; /* OID of replica identity index, if any */
156 
157  /* data managed by RelationGetStatExtList: */
158  List *rd_statlist; /* list of OIDs of extended stats */
159 
160  /* data managed by RelationGetIndexAttrBitmap: */
161  bool rd_attrsvalid; /* are bitmaps of attrs valid? */
162  Bitmapset *rd_keyattr; /* cols that can be ref'd by foreign keys */
163  Bitmapset *rd_pkattr; /* cols included in primary key */
164  Bitmapset *rd_idattr; /* included in replica identity index */
165  Bitmapset *rd_hotblockingattr; /* cols blocking HOT update */
166  Bitmapset *rd_summarizedattr; /* cols indexed by summarizing indexes */
167 
168  PublicationDesc *rd_pubdesc; /* publication descriptor, or NULL */
169 
170  /*
171  * rd_options is set whenever rd_rel is loaded into the relcache entry.
172  * Note that you can NOT look into rd_rel for this data. NULL means "use
173  * defaults".
174  */
175  bytea *rd_options; /* parsed pg_class.reloptions */
176 
177  /*
178  * Oid of the handler for this relation. For an index this is a function
179  * returning IndexAmRoutine, for table like relations a function returning
180  * TableAmRoutine. This is stored separately from rd_indam, rd_tableam as
181  * its lookup requires syscache access, but during relcache bootstrap we
182  * need to be able to initialize rd_tableam without syscache lookups.
183  */
184  Oid rd_amhandler; /* OID of index AM's handler function */
185 
186  /*
187  * Table access method.
188  */
189  const struct TableAmRoutine *rd_tableam;
190 
191  /* These are non-NULL only for an index relation: */
192  Form_pg_index rd_index; /* pg_index tuple describing this index */
193  /* use "struct" here to avoid needing to include htup.h: */
194  struct HeapTupleData *rd_indextuple; /* all of pg_index tuple */
195 
196  /*
197  * index access support info (used only for an index relation)
198  *
199  * Note: only default support procs for each opclass are cached, namely
200  * those with lefttype and righttype equal to the opclass's opcintype. The
201  * arrays are indexed by support function number, which is a sufficient
202  * identifier given that restriction.
203  */
204  MemoryContext rd_indexcxt; /* private memory cxt for this stuff */
205  /* use "struct" here to avoid needing to include amapi.h: */
206  struct IndexAmRoutine *rd_indam; /* index AM's API struct */
207  Oid *rd_opfamily; /* OIDs of op families for each index col */
208  Oid *rd_opcintype; /* OIDs of opclass declared input data types */
209  RegProcedure *rd_support; /* OIDs of support procedures */
210  struct FmgrInfo *rd_supportinfo; /* lookup info for support procedures */
211  int16 *rd_indoption; /* per-column AM-specific flags */
212  List *rd_indexprs; /* index expression trees, if any */
213  List *rd_indpred; /* index predicate tree, if any */
214  Oid *rd_exclops; /* OIDs of exclusion operators, if any */
215  Oid *rd_exclprocs; /* OIDs of exclusion ops' procs, if any */
216  uint16 *rd_exclstrats; /* exclusion ops' strategy numbers, if any */
217  Oid *rd_indcollation; /* OIDs of index collations */
218  bytea **rd_opcoptions; /* parsed opclass-specific options */
219 
220  /*
221  * rd_amcache is available for index and table AMs to cache private data
222  * about the relation. This must be just a cache since it may get reset
223  * at any time (in particular, it will get reset by a relcache inval
224  * message for the relation). If used, it must point to a single memory
225  * chunk palloc'd in CacheMemoryContext, or in rd_indexcxt for an index
226  * relation. A relcache reset will include freeing that chunk and setting
227  * rd_amcache = NULL.
228  */
229  void *rd_amcache; /* available for use by index/table AM */
230 
231  /*
232  * foreign-table support
233  *
234  * rd_fdwroutine must point to a single memory chunk palloc'd in
235  * CacheMemoryContext. It will be freed and reset to NULL on a relcache
236  * reset.
237  */
238 
239  /* use "struct" here to avoid needing to include fdwapi.h: */
240  struct FdwRoutine *rd_fdwroutine; /* cached function pointers, or NULL */
241 
242  /*
243  * Hack for CLUSTER, rewriting ALTER TABLE, etc: when writing a new
244  * version of a table, we need to make any toast pointers inserted into it
245  * have the existing toast table's OID, not the OID of the transient toast
246  * table. If rd_toastoid isn't InvalidOid, it is the OID to place in
247  * toast pointers inserted into this rel. (Note it's set on the new
248  * version of the main heap, not the toast table itself.) This also
249  * causes toast_save_datum() to try to preserve toast value OIDs.
250  */
251  Oid rd_toastoid; /* Real TOAST table's OID, or InvalidOid */
252 
253  bool pgstat_enabled; /* should relation stats be counted */
254  /* use "struct" here to avoid needing to include pgstat.h: */
255  struct PgStat_TableStatus *pgstat_info; /* statistics collection area */
257 
258 
259 /*
260  * ForeignKeyCacheInfo
261  * Information the relcache can cache about foreign key constraints
262  *
263  * This is basically just an image of relevant columns from pg_constraint.
264  * We make it a subclass of Node so that copyObject() can be used on a list
265  * of these, but we also ensure it is a "flat" object without substructure,
266  * so that list_free_deep() is sufficient to free such a list.
267  * The per-FK-column arrays can be fixed-size because we allow at most
268  * INDEX_MAX_KEYS columns in a foreign key constraint.
269  *
270  * Currently, we mostly cache fields of interest to the planner, but the set
271  * of fields has already grown the constraint OID for other uses.
272  */
273 typedef struct ForeignKeyCacheInfo
274 {
275  pg_node_attr(no_equal, no_read, no_query_jumble)
276 
277  NodeTag type;
278  /* oid of the constraint itself */
280  /* relation constrained by the foreign key */
282  /* relation referenced by the foreign key */
284  /* number of columns in the foreign key */
285  int nkeys;
286 
287  /*
288  * these arrays each have nkeys valid entries:
289  */
290  /* cols in referencing table */
292  /* cols in referenced table */
294  /* PK = FK operator OIDs */
295  Oid conpfeqop[INDEX_MAX_KEYS] pg_node_attr(array_size(nkeys));
297 
298 
299 /*
300  * StdRdOptions
301  * Standard contents of rd_options for heaps.
302  *
303  * RelationGetFillFactor() and RelationGetTargetPageFreeSpace() can only
304  * be applied to relations that use this format or a superset for
305  * private options data.
306  */
307  /* autovacuum-related reloptions. */
308 typedef struct AutoVacOpts
309 {
310  bool enabled;
327 
328 /* StdRdOptions->vacuum_index_cleanup values */
330 {
335 
336 typedef struct StdRdOptions
337 {
338  int32 vl_len_; /* varlena header (do not touch directly!) */
339  int fillfactor; /* page fill factor in percent (0..100) */
340  int toast_tuple_target; /* target for tuple toasting */
341  AutoVacOpts autovacuum; /* autovacuum-related options */
342  bool user_catalog_table; /* use as an additional catalog relation */
343  int parallel_workers; /* max number of parallel workers */
344  StdRdOptIndexCleanup vacuum_index_cleanup; /* controls index vacuuming */
345  bool vacuum_truncate; /* enables vacuum to truncate a relation */
347 
348 #define HEAP_MIN_FILLFACTOR 10
349 #define HEAP_DEFAULT_FILLFACTOR 100
350 
351 /*
352  * RelationGetToastTupleTarget
353  * Returns the relation's toast_tuple_target. Note multiple eval of argument!
354  */
355 #define RelationGetToastTupleTarget(relation, defaulttarg) \
356  ((relation)->rd_options ? \
357  ((StdRdOptions *) (relation)->rd_options)->toast_tuple_target : (defaulttarg))
358 
359 /*
360  * RelationGetFillFactor
361  * Returns the relation's fillfactor. Note multiple eval of argument!
362  */
363 #define RelationGetFillFactor(relation, defaultff) \
364  ((relation)->rd_options ? \
365  ((StdRdOptions *) (relation)->rd_options)->fillfactor : (defaultff))
366 
367 /*
368  * RelationGetTargetPageUsage
369  * Returns the relation's desired space usage per page in bytes.
370  */
371 #define RelationGetTargetPageUsage(relation, defaultff) \
372  (BLCKSZ * RelationGetFillFactor(relation, defaultff) / 100)
373 
374 /*
375  * RelationGetTargetPageFreeSpace
376  * Returns the relation's desired freespace per page in bytes.
377  */
378 #define RelationGetTargetPageFreeSpace(relation, defaultff) \
379  (BLCKSZ * (100 - RelationGetFillFactor(relation, defaultff)) / 100)
380 
381 /*
382  * RelationIsUsedAsCatalogTable
383  * Returns whether the relation should be treated as a catalog table
384  * from the pov of logical decoding. Note multiple eval of argument!
385  */
386 #define RelationIsUsedAsCatalogTable(relation) \
387  ((relation)->rd_options && \
388  ((relation)->rd_rel->relkind == RELKIND_RELATION || \
389  (relation)->rd_rel->relkind == RELKIND_MATVIEW) ? \
390  ((StdRdOptions *) (relation)->rd_options)->user_catalog_table : false)
391 
392 /*
393  * RelationGetParallelWorkers
394  * Returns the relation's parallel_workers reloption setting.
395  * Note multiple eval of argument!
396  */
397 #define RelationGetParallelWorkers(relation, defaultpw) \
398  ((relation)->rd_options ? \
399  ((StdRdOptions *) (relation)->rd_options)->parallel_workers : (defaultpw))
400 
401 /* ViewOptions->check_option values */
402 typedef enum ViewOptCheckOption
403 {
408 
409 /*
410  * ViewOptions
411  * Contents of rd_options for views
412  */
413 typedef struct ViewOptions
414 {
415  int32 vl_len_; /* varlena header (do not touch directly!) */
420 
421 /*
422  * RelationIsSecurityView
423  * Returns whether the relation is security view, or not. Note multiple
424  * eval of argument!
425  */
426 #define RelationIsSecurityView(relation) \
427  (AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
428  (relation)->rd_options ? \
429  ((ViewOptions *) (relation)->rd_options)->security_barrier : false)
430 
431 /*
432  * RelationHasSecurityInvoker
433  * Returns true if the relation has the security_invoker property set.
434  * Note multiple eval of argument!
435  */
436 #define RelationHasSecurityInvoker(relation) \
437  (AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
438  (relation)->rd_options ? \
439  ((ViewOptions *) (relation)->rd_options)->security_invoker : false)
440 
441 /*
442  * RelationHasCheckOption
443  * Returns true if the relation is a view defined with either the local
444  * or the cascaded check option. Note multiple eval of argument!
445  */
446 #define RelationHasCheckOption(relation) \
447  (AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
448  (relation)->rd_options && \
449  ((ViewOptions *) (relation)->rd_options)->check_option != \
450  VIEW_OPTION_CHECK_OPTION_NOT_SET)
451 
452 /*
453  * RelationHasLocalCheckOption
454  * Returns true if the relation is a view defined with the local check
455  * option. Note multiple eval of argument!
456  */
457 #define RelationHasLocalCheckOption(relation) \
458  (AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
459  (relation)->rd_options && \
460  ((ViewOptions *) (relation)->rd_options)->check_option == \
461  VIEW_OPTION_CHECK_OPTION_LOCAL)
462 
463 /*
464  * RelationHasCascadedCheckOption
465  * Returns true if the relation is a view defined with the cascaded check
466  * option. Note multiple eval of argument!
467  */
468 #define RelationHasCascadedCheckOption(relation) \
469  (AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
470  (relation)->rd_options && \
471  ((ViewOptions *) (relation)->rd_options)->check_option == \
472  VIEW_OPTION_CHECK_OPTION_CASCADED)
473 
474 /*
475  * RelationIsValid
476  * True iff relation descriptor is valid.
477  */
478 #define RelationIsValid(relation) PointerIsValid(relation)
479 
480 #define InvalidRelation ((Relation) NULL)
481 
482 /*
483  * RelationHasReferenceCountZero
484  * True iff relation reference count is zero.
485  *
486  * Note:
487  * Assumes relation descriptor is valid.
488  */
489 #define RelationHasReferenceCountZero(relation) \
490  ((bool)((relation)->rd_refcnt == 0))
491 
492 /*
493  * RelationGetForm
494  * Returns pg_class tuple for a relation.
495  *
496  * Note:
497  * Assumes relation descriptor is valid.
498  */
499 #define RelationGetForm(relation) ((relation)->rd_rel)
500 
501 /*
502  * RelationGetRelid
503  * Returns the OID of the relation
504  */
505 #define RelationGetRelid(relation) ((relation)->rd_id)
506 
507 /*
508  * RelationGetNumberOfAttributes
509  * Returns the total number of attributes in a relation.
510  */
511 #define RelationGetNumberOfAttributes(relation) ((relation)->rd_rel->relnatts)
512 
513 /*
514  * IndexRelationGetNumberOfAttributes
515  * Returns the number of attributes in an index.
516  */
517 #define IndexRelationGetNumberOfAttributes(relation) \
518  ((relation)->rd_index->indnatts)
519 
520 /*
521  * IndexRelationGetNumberOfKeyAttributes
522  * Returns the number of key attributes in an index.
523  */
524 #define IndexRelationGetNumberOfKeyAttributes(relation) \
525  ((relation)->rd_index->indnkeyatts)
526 
527 /*
528  * RelationGetDescr
529  * Returns tuple descriptor for a relation.
530  */
531 #define RelationGetDescr(relation) ((relation)->rd_att)
532 
533 /*
534  * RelationGetRelationName
535  * Returns the rel's name.
536  *
537  * Note that the name is only unique within the containing namespace.
538  */
539 #define RelationGetRelationName(relation) \
540  (NameStr((relation)->rd_rel->relname))
541 
542 /*
543  * RelationGetNamespace
544  * Returns the rel's namespace OID.
545  */
546 #define RelationGetNamespace(relation) \
547  ((relation)->rd_rel->relnamespace)
548 
549 /*
550  * RelationIsMapped
551  * True if the relation uses the relfilenumber map. Note multiple eval
552  * of argument!
553  */
554 #define RelationIsMapped(relation) \
555  (RELKIND_HAS_STORAGE((relation)->rd_rel->relkind) && \
556  ((relation)->rd_rel->relfilenode == InvalidRelFileNumber))
557 
558 #ifndef FRONTEND
559 /*
560  * RelationGetSmgr
561  * Returns smgr file handle for a relation, opening it if needed.
562  *
563  * Very little code is authorized to touch rel->rd_smgr directly. Instead
564  * use this function to fetch its value.
565  */
566 static inline SMgrRelation
568 {
569  if (unlikely(rel->rd_smgr == NULL))
570  {
571  rel->rd_smgr = smgropen(rel->rd_locator, rel->rd_backend);
572  smgrpin(rel->rd_smgr);
573  }
574  return rel->rd_smgr;
575 }
576 
577 /*
578  * RelationCloseSmgr
579  * Close the relation at the smgr level, if not already done.
580  */
581 static inline void
583 {
584  if (relation->rd_smgr != NULL)
585  {
586  smgrunpin(relation->rd_smgr);
587  smgrclose(relation->rd_smgr);
588  relation->rd_smgr = NULL;
589  }
590 }
591 #endif /* !FRONTEND */
592 
593 /*
594  * RelationGetTargetBlock
595  * Fetch relation's current insertion target block.
596  *
597  * Returns InvalidBlockNumber if there is no current target block. Note
598  * that the target block status is discarded on any smgr-level invalidation,
599  * so there's no need to re-open the smgr handle if it's not currently open.
600  */
601 #define RelationGetTargetBlock(relation) \
602  ( (relation)->rd_smgr != NULL ? (relation)->rd_smgr->smgr_targblock : InvalidBlockNumber )
603 
604 /*
605  * RelationSetTargetBlock
606  * Set relation's current insertion target block.
607  */
608 #define RelationSetTargetBlock(relation, targblock) \
609  do { \
610  RelationGetSmgr(relation)->smgr_targblock = (targblock); \
611  } while (0)
612 
613 /*
614  * RelationIsPermanent
615  * True if relation is permanent.
616  */
617 #define RelationIsPermanent(relation) \
618  ((relation)->rd_rel->relpersistence == RELPERSISTENCE_PERMANENT)
619 
620 /*
621  * RelationNeedsWAL
622  * True if relation needs WAL.
623  *
624  * Returns false if wal_level = minimal and this relation is created or
625  * truncated in the current transaction. See "Skipping WAL for New
626  * RelFileLocator" in src/backend/access/transam/README.
627  */
628 #define RelationNeedsWAL(relation) \
629  (RelationIsPermanent(relation) && (XLogIsNeeded() || \
630  (relation->rd_createSubid == InvalidSubTransactionId && \
631  relation->rd_firstRelfilelocatorSubid == InvalidSubTransactionId)))
632 
633 /*
634  * RelationUsesLocalBuffers
635  * True if relation's pages are stored in local buffers.
636  */
637 #define RelationUsesLocalBuffers(relation) \
638  ((relation)->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
639 
640 /*
641  * RELATION_IS_LOCAL
642  * If a rel is either temp or newly created in the current transaction,
643  * it can be assumed to be accessible only to the current backend.
644  * This is typically used to decide that we can skip acquiring locks.
645  *
646  * Beware of multiple eval of argument
647  */
648 #define RELATION_IS_LOCAL(relation) \
649  ((relation)->rd_islocaltemp || \
650  (relation)->rd_createSubid != InvalidSubTransactionId)
651 
652 /*
653  * RELATION_IS_OTHER_TEMP
654  * Test for a temporary relation that belongs to some other session.
655  *
656  * Beware of multiple eval of argument
657  */
658 #define RELATION_IS_OTHER_TEMP(relation) \
659  ((relation)->rd_rel->relpersistence == RELPERSISTENCE_TEMP && \
660  !(relation)->rd_islocaltemp)
661 
662 
663 /*
664  * RelationIsScannable
665  * Currently can only be false for a materialized view which has not been
666  * populated by its query. This is likely to get more complicated later,
667  * so use a macro which looks like a function.
668  */
669 #define RelationIsScannable(relation) ((relation)->rd_rel->relispopulated)
670 
671 /*
672  * RelationIsPopulated
673  * Currently, we don't physically distinguish the "populated" and
674  * "scannable" properties of matviews, but that may change later.
675  * Hence, use the appropriate one of these macros in code tests.
676  */
677 #define RelationIsPopulated(relation) ((relation)->rd_rel->relispopulated)
678 
679 /*
680  * RelationIsAccessibleInLogicalDecoding
681  * True if we need to log enough information to have access via
682  * decoding snapshot.
683  */
684 #define RelationIsAccessibleInLogicalDecoding(relation) \
685  (XLogLogicalInfoActive() && \
686  RelationNeedsWAL(relation) && \
687  (IsCatalogRelation(relation) || RelationIsUsedAsCatalogTable(relation)))
688 
689 /*
690  * RelationIsLogicallyLogged
691  * True if we need to log enough information to extract the data from the
692  * WAL stream.
693  *
694  * We don't log information for unlogged tables (since they don't WAL log
695  * anyway), for foreign tables (since they don't WAL log, either),
696  * and for system tables (their content is hard to make sense of, and
697  * it would complicate decoding slightly for little gain). Note that we *do*
698  * log information for user defined catalog tables since they presumably are
699  * interesting to the user...
700  */
701 #define RelationIsLogicallyLogged(relation) \
702  (XLogLogicalInfoActive() && \
703  RelationNeedsWAL(relation) && \
704  (relation)->rd_rel->relkind != RELKIND_FOREIGN_TABLE && \
705  !IsCatalogRelation(relation))
706 
707 /* routines in utils/cache/relcache.c */
710 
711 #endif /* REL_H */
int16 AttrNumber
Definition: attnum.h:21
unsigned short uint16
Definition: c.h:508
signed short int16
Definition: c.h:496
uint32 SubTransactionId
Definition: c.h:659
signed int int32
Definition: c.h:497
double float8
Definition: c.h:633
regproc RegProcedure
Definition: c.h:653
#define unlikely(x)
Definition: c.h:314
uint32 TransactionId
Definition: c.h:655
NodeTag
Definition: nodes.h:27
FormData_pg_class * Form_pg_class
Definition: pg_class.h:153
#define INDEX_MAX_KEYS
FormData_pg_index * Form_pg_index
Definition: pg_index.h:70
unsigned int Oid
Definition: postgres_ext.h:31
int ProcNumber
Definition: procnumber.h:24
LockInfoData * LockInfo
Definition: rel.h:49
struct LockRelId LockRelId
void RelationDecrementReferenceCount(Relation rel)
Definition: relcache.c:2172
ViewOptCheckOption
Definition: rel.h:403
@ VIEW_OPTION_CHECK_OPTION_NOT_SET
Definition: rel.h:404
@ VIEW_OPTION_CHECK_OPTION_LOCAL
Definition: rel.h:405
@ VIEW_OPTION_CHECK_OPTION_CASCADED
Definition: rel.h:406
struct ForeignKeyCacheInfo ForeignKeyCacheInfo
static SMgrRelation RelationGetSmgr(Relation rel)
Definition: rel.h:567
void RelationIncrementReferenceCount(Relation rel)
Definition: relcache.c:2159
struct StdRdOptions StdRdOptions
struct ViewOptions ViewOptions
struct LockInfoData LockInfoData
struct AutoVacOpts AutoVacOpts
struct RelationData RelationData
static void RelationCloseSmgr(Relation relation)
Definition: rel.h:582
StdRdOptIndexCleanup
Definition: rel.h:330
@ STDRD_OPTION_VACUUM_INDEX_CLEANUP_AUTO
Definition: rel.h:331
@ STDRD_OPTION_VACUUM_INDEX_CLEANUP_OFF
Definition: rel.h:332
@ STDRD_OPTION_VACUUM_INDEX_CLEANUP_ON
Definition: rel.h:333
SMgrRelation smgropen(RelFileLocator rlocator, ProcNumber backend)
Definition: smgr.c:198
void smgrpin(SMgrRelation reln)
Definition: smgr.c:250
void smgrunpin(SMgrRelation reln)
Definition: smgr.c:265
void smgrclose(SMgrRelation reln)
Definition: smgr.c:320
int vacuum_ins_threshold
Definition: rel.h:312
int log_min_duration
Definition: rel.h:321
float8 vacuum_cost_delay
Definition: rel.h:322
int multixact_freeze_max_age
Definition: rel.h:319
int vacuum_cost_limit
Definition: rel.h:314
float8 vacuum_scale_factor
Definition: rel.h:323
int analyze_threshold
Definition: rel.h:313
float8 vacuum_ins_scale_factor
Definition: rel.h:324
bool enabled
Definition: rel.h:310
int multixact_freeze_table_age
Definition: rel.h:320
int freeze_min_age
Definition: rel.h:315
int freeze_table_age
Definition: rel.h:317
int freeze_max_age
Definition: rel.h:316
int vacuum_threshold
Definition: rel.h:311
int multixact_freeze_min_age
Definition: rel.h:318
float8 analyze_scale_factor
Definition: rel.h:325
Definition: fmgr.h:57
AttrNumber confkey[INDEX_MAX_KEYS] pg_node_attr(array_size(nkeys))
Oid conpfeqop[INDEX_MAX_KEYS] pg_node_attr(array_size(nkeys))
AttrNumber conkey[INDEX_MAX_KEYS] pg_node_attr(array_size(nkeys))
pg_node_attr(no_equal, no_read, no_query_jumble) NodeTag type
Definition: pg_list.h:54
LockRelId lockRelId
Definition: rel.h:46
Definition: rel.h:39
Oid relId
Definition: rel.h:40
Oid dbId
Definition: rel.h:41
List * rd_partcheck
Definition: rel.h:147
bool pgstat_enabled
Definition: rel.h:253
Bitmapset * rd_keyattr
Definition: rel.h:162
ProcNumber rd_backend
Definition: rel.h:60
bool rd_ispkdeferrable
Definition: rel.h:154
bool rd_partcheckvalid
Definition: rel.h:148
MemoryContext rd_pdcxt
Definition: rel.h:131
Oid rd_toastoid
Definition: rel.h:251
MemoryContext rd_partkeycxt
Definition: rel.h:127
const struct TableAmRoutine * rd_tableam
Definition: rel.h:189
TransactionId rd_partdesc_nodetached_xmin
Definition: rel.h:144
bool rd_indexvalid
Definition: rel.h:64
List * rd_indpred
Definition: rel.h:213
struct IndexAmRoutine * rd_indam
Definition: rel.h:206
List * rd_fkeylist
Definition: rel.h:122
Oid * rd_exclprocs
Definition: rel.h:215
SubTransactionId rd_firstRelfilelocatorSubid
Definition: rel.h:106
LockInfoData rd_lockInfo
Definition: rel.h:114
uint16 * rd_exclstrats
Definition: rel.h:216
List * rd_indexlist
Definition: rel.h:152
struct RowSecurityDesc * rd_rsdesc
Definition: rel.h:119
PartitionDesc rd_partdesc
Definition: rel.h:130
Oid rd_replidindex
Definition: rel.h:155
int rd_refcnt
Definition: rel.h:59
RegProcedure * rd_support
Definition: rel.h:209
PartitionDesc rd_partdesc_nodetached
Definition: rel.h:134
bytea ** rd_opcoptions
Definition: rel.h:218
PublicationDesc * rd_pubdesc
Definition: rel.h:168
struct FdwRoutine * rd_fdwroutine
Definition: rel.h:240
TriggerDesc * trigdesc
Definition: rel.h:117
Bitmapset * rd_idattr
Definition: rel.h:164
bool rd_isvalid
Definition: rel.h:63
bool rd_islocaltemp
Definition: rel.h:61
List * rd_indexprs
Definition: rel.h:212
bool rd_attrsvalid
Definition: rel.h:161
Oid * rd_exclops
Definition: rel.h:214
Oid * rd_opcintype
Definition: rel.h:208
struct HeapTupleData * rd_indextuple
Definition: rel.h:194
MemoryContext rd_partcheckcxt
Definition: rel.h:149
int16 * rd_indoption
Definition: rel.h:211
TupleDesc rd_att
Definition: rel.h:112
Form_pg_index rd_index
Definition: rel.h:192
Bitmapset * rd_hotblockingattr
Definition: rel.h:165
void * rd_amcache
Definition: rel.h:229
bool rd_isnailed
Definition: rel.h:62
Oid rd_id
Definition: rel.h:113
Oid rd_pkindex
Definition: rel.h:153
SubTransactionId rd_newRelfilelocatorSubid
Definition: rel.h:104
bool rd_fkeyvalid
Definition: rel.h:123
Oid rd_amhandler
Definition: rel.h:184
SMgrRelation rd_smgr
Definition: rel.h:58
SubTransactionId rd_createSubid
Definition: rel.h:103
bool rd_statvalid
Definition: rel.h:66
MemoryContext rd_indexcxt
Definition: rel.h:204
List * rd_statlist
Definition: rel.h:158
MemoryContext rd_pddcxt
Definition: rel.h:135
RelFileLocator rd_locator
Definition: rel.h:57
RuleLock * rd_rules
Definition: rel.h:115
struct FmgrInfo * rd_supportinfo
Definition: rel.h:210
Oid * rd_opfamily
Definition: rel.h:207
SubTransactionId rd_droppedSubid
Definition: rel.h:109
MemoryContext rd_rulescxt
Definition: rel.h:116
Bitmapset * rd_summarizedattr
Definition: rel.h:166
Bitmapset * rd_pkattr
Definition: rel.h:163
PartitionKey rd_partkey
Definition: rel.h:126
bytea * rd_options
Definition: rel.h:175
Oid * rd_indcollation
Definition: rel.h:217
Form_pg_class rd_rel
Definition: rel.h:111
struct PgStat_TableStatus * pgstat_info
Definition: rel.h:255
int32 vl_len_
Definition: rel.h:338
bool user_catalog_table
Definition: rel.h:342
StdRdOptIndexCleanup vacuum_index_cleanup
Definition: rel.h:344
int fillfactor
Definition: rel.h:339
AutoVacOpts autovacuum
Definition: rel.h:341
int toast_tuple_target
Definition: rel.h:340
int parallel_workers
Definition: rel.h:343
bool vacuum_truncate
Definition: rel.h:345
bool security_invoker
Definition: rel.h:417
int32 vl_len_
Definition: rel.h:415
bool security_barrier
Definition: rel.h:416
ViewOptCheckOption check_option
Definition: rel.h:418
Definition: c.h:690
const char * type