codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * partcache.h4 *5 * Copyright (c) 1996-2023, PostgreSQL Global Development Group6 *7 * src/include/utils/partcache.h8 *9 *-------------------------------------------------------------------------10 */11#ifndef PARTCACHE_H12#define PARTCACHE_H13 14#include "access/attnum.h"15#include "fmgr.h"16#include "nodes/parsenodes.h"17#include "nodes/pg_list.h"18#include "nodes/primnodes.h"19#include "partitioning/partdefs.h"20#include "utils/relcache.h"21 22/*23 * Information about the partition key of a relation24 */25typedef struct PartitionKeyData26{27	PartitionStrategy strategy; /* partitioning strategy */28	int16		partnatts;		/* number of columns in the partition key */29	AttrNumber *partattrs;		/* attribute numbers of columns in the30								 * partition key or 0 if it's an expr */31	List	   *partexprs;		/* list of expressions in the partitioning32								 * key, one for each zero-valued partattrs */33 34	Oid		   *partopfamily;	/* OIDs of operator families */35	Oid		   *partopcintype;	/* OIDs of opclass declared input data types */36	FmgrInfo   *partsupfunc;	/* lookup info for support funcs */37 38	/* Partitioning collation per attribute */39	Oid		   *partcollation;40 41	/* Type information per attribute */42	Oid		   *parttypid;43	int32	   *parttypmod;44	int16	   *parttyplen;45	bool	   *parttypbyval;46	char	   *parttypalign;47	Oid		   *parttypcoll;48}			PartitionKeyData;49 50 51extern PartitionKey RelationGetPartitionKey(Relation rel);52extern List *RelationGetPartitionQual(Relation rel);53extern Expr *get_partition_qual_relid(Oid relid);54 55/*56 * PartitionKey inquiry functions57 */58static inline int59get_partition_strategy(PartitionKey key)60{61	return key->strategy;62}63 64static inline int65get_partition_natts(PartitionKey key)66{67	return key->partnatts;68}69 70static inline List *71get_partition_exprs(PartitionKey key)72{73	return key->partexprs;74}75 76/*77 * PartitionKey inquiry functions - one column78 */79static inline int1680get_partition_col_attnum(PartitionKey key, int col)81{82	return key->partattrs[col];83}84 85static inline Oid86get_partition_col_typid(PartitionKey key, int col)87{88	return key->parttypid[col];89}90 91static inline int3292get_partition_col_typmod(PartitionKey key, int col)93{94	return key->parttypmod[col];95}96 97static inline Oid98get_partition_col_collation(PartitionKey key, int col)99{100	return key->partcollation[col];101}102 103#endif							/* PARTCACHE_H */104