104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* partcache.h
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*
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* Copyright (c) 1996-2024, PostgreSQL Global Development Group
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*
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* src/include/utils/partcache.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARTCACHE_H
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#define PARTCACHE_H
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#include "access/attnum.h"
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#include "fmgr.h"
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#include "nodes/parsenodes.h"
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#include "nodes/pg_list.h"
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#include "nodes/primnodes.h"
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#include "partitioning/partdefs.h"
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#include "utils/relcache.h"
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/*
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* Information about the partition key of a relation
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*/
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typedef struct PartitionKeyData
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{
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PartitionStrategy strategy; /* partitioning strategy */
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int16 partnatts; /* number of columns in the partition key */
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AttrNumber *partattrs; /* attribute numbers of columns in the
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* partition key or 0 if it's an expr */
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List *partexprs; /* list of expressions in the partitioning
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* key, one for each zero-valued partattrs */
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Oid *partopfamily; /* OIDs of operator families */
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Oid *partopcintype; /* OIDs of opclass declared input data types */
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FmgrInfo *partsupfunc; /* lookup info for support funcs */
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/* Partitioning collation per attribute */
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Oid *partcollation;
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/* Type information per attribute */
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Oid *parttypid;
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int32 *parttypmod;
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int16 *parttyplen;
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bool *parttypbyval;
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char *parttypalign;
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Oid *parttypcoll;
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} PartitionKeyData;
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extern PartitionKey RelationGetPartitionKey(Relation rel);
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extern List *RelationGetPartitionQual(Relation rel);
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extern Expr *get_partition_qual_relid(Oid relid);
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/*
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* PartitionKey inquiry functions
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*/
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static inline int
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get_partition_strategy(PartitionKey key)
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{
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return key->strategy;
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}
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static inline int
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get_partition_natts(PartitionKey key)
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{
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return key->partnatts;
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}
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static inline List *
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get_partition_exprs(PartitionKey key)
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{
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return key->partexprs;
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}
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/*
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* PartitionKey inquiry functions - one column
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*/
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static inline int16
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get_partition_col_attnum(PartitionKey key, int col)
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{
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return key->partattrs[col];
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}
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static inline Oid
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get_partition_col_typid(PartitionKey key, int col)
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{
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return key->parttypid[col];
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}
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static inline int32
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get_partition_col_typmod(PartitionKey key, int col)
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{
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return key->parttypmod[col];
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}
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static inline Oid
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get_partition_col_collation(PartitionKey key, int col)
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{
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return key->partcollation[col];
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}
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#endif /* PARTCACHE_H */
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