partcache.h File Reference

#include "access/attnum.h"
#include "fmgr.h"
#include "nodes/parsenodes.h"
#include "nodes/pg_list.h"
#include "nodes/primnodes.h"
#include "partitioning/partdefs.h"
#include "utils/relcache.h"

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Data Structures
struct	PartitionKeyData

Typedefs
typedef struct PartitionKeyData	PartitionKeyData

Functions
PartitionKey	RelationGetPartitionKey (Relation rel)
List *	RelationGetPartitionQual (Relation rel)
Expr *	get_partition_qual_relid (Oid relid)
static int	get_partition_strategy (PartitionKey key)
static int	get_partition_natts (PartitionKey key)
static List *	get_partition_exprs (PartitionKey key)
static int16	get_partition_col_attnum (PartitionKey key, int col)
static Oid	get_partition_col_typid (PartitionKey key, int col)
static int32	get_partition_col_typmod (PartitionKey key, int col)
static Oid	get_partition_col_collation (PartitionKey key, int col)

Typedef Documentation

PartitionKeyData

typedef struct PartitionKeyData PartitionKeyData

Function Documentation

get_partition_col_attnum()

static int16 get_partition_col_attnum ( PartitionKey  key, int  col  )

inlinestatic

Definition at line 80 of file partcache.h.

{
    return key->partattrs[col];
}

References sort-test::key.

Referenced by ExecBuildSlotPartitionKeyDescription(), and has_partition_attrs().

get_partition_col_collation()

static Oid get_partition_col_collation ( PartitionKey  key, int  col  )

inlinestatic

Definition at line 98 of file partcache.h.

{
    return key->partcollation[col];
}

References sort-test::key.

Referenced by transformPartitionBound(), and transformPartitionRangeBounds().

get_partition_col_typid()

static Oid get_partition_col_typid ( PartitionKey  key, int  col  )

inlinestatic

Definition at line 86 of file partcache.h.

{
    return key->parttypid[col];
}

References sort-test::key.

Referenced by ExecBuildSlotPartitionKeyDescription(), transformPartitionBound(), and transformPartitionRangeBounds().

get_partition_col_typmod()

static int32 get_partition_col_typmod ( PartitionKey  key, int  col  )

inlinestatic

Definition at line 92 of file partcache.h.

{
    return key->parttypmod[col];
}

References sort-test::key.

Referenced by transformPartitionBound(), and transformPartitionRangeBounds().

get_partition_exprs()

static List * get_partition_exprs ( PartitionKey  key )

inlinestatic

Definition at line 71 of file partcache.h.

{
    return key->partexprs;
}

References sort-test::key.

Referenced by has_partition_attrs(), transformPartitionBound(), and transformPartitionRangeBounds().

get_partition_natts()

static int get_partition_natts ( PartitionKey  key )

inlinestatic

Definition at line 65 of file partcache.h.

{
    return key->partnatts;
}

References sort-test::key.

Referenced by ExecBuildSlotPartitionKeyDescription(), has_partition_attrs(), and transformPartitionBound().

get_partition_qual_relid()

Expr * get_partition_qual_relid

(

Oid

relid

)

Definition at line 299 of file partcache.c.

{
    Expr       *result = NULL;
 
    /* Do the work only if this relation exists and is a partition. */
    if (get_rel_relispartition(relid))
    {
        Relation    rel = relation_open(relid, AccessShareLock);
        List       *and_args;
 
        and_args = generate_partition_qual(rel);
 
        /* Convert implicit-AND list format to boolean expression */
        if (and_args == NIL)
            result = NULL;
        else if (list_length(and_args) > 1)
            result = makeBoolExpr(AND_EXPR, and_args, -1);
        else
            result = linitial(and_args);
 
        /* Keep the lock, to allow safe deparsing against the rel by caller. */
        relation_close(rel, NoLock);
    }
 
    return result;
}

References AccessShareLock, AND_EXPR, generate_partition_qual(), get_rel_relispartition(), linitial, list_length(), makeBoolExpr(), NIL, NoLock, relation_close(), and relation_open().

Referenced by pg_get_partconstrdef_string(), and pg_get_partition_constraintdef().

get_partition_strategy()

static int get_partition_strategy ( PartitionKey  key )

inlinestatic

Definition at line 59 of file partcache.h.

{
    return key->strategy;
}

References sort-test::key.

Referenced by transformPartitionBound().

RelationGetPartitionKey()

PartitionKey RelationGetPartitionKey

(

Relation

rel

)

Definition at line 51 of file partcache.c.

{
    if (rel->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
        return NULL;
 
    if (unlikely(rel->rd_partkey == NULL))
        RelationBuildPartitionKey(rel);
 
    return rel->rd_partkey;
}

References RelationData::rd_partkey, RelationData::rd_rel, RelationBuildPartitionKey(), and unlikely.

Referenced by check_new_partition_bound(), CreatePartitionPruneState(), DefineIndex(), ExecBuildSlotPartitionKeyDescription(), ExecInitPartitionDispatchInfo(), find_partition_scheme(), get_qual_for_hash(), get_qual_for_list(), get_qual_for_range(), get_qual_from_partbound(), has_partition_attrs(), InitExecPartitionPruneContexts(), RelationBuildPartitionDesc(), satisfies_hash_partition(), set_baserel_partition_key_exprs(), transformPartitionBound(), transformPartitionCmd(), and transformPartitionRangeBounds().

RelationGetPartitionQual()

List * RelationGetPartitionQual

(

Relation

rel

)

Definition at line 277 of file partcache.c.

{
    /* Quick exit */
    if (!rel->rd_rel->relispartition)
        return NIL;
 
    return generate_partition_qual(rel);
}

References generate_partition_qual(), NIL, and RelationData::rd_rel.

Referenced by ATExecAttachPartition(), DetachAddConstraintIfNeeded(), ExecPartitionCheck(), and set_baserel_partition_constraint().