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📁 ..
📄 amapi.h(6.3 KB)
📄 amvalidate.h(1.19 KB)
📄 attnum.h(1.52 KB)
📄 brin.h(948 B)
📄 brin_internal.h(3.3 KB)
📄 brin_page.h(2.68 KB)
📄 brin_pageops.h(1.28 KB)
📄 brin_revmap.h(1.23 KB)
📄 brin_tuple.h(3.05 KB)
📄 brin_xlog.h(3.28 KB)
📄 clog.h(1.54 KB)
📄 commit_ts.h(2.09 KB)
📄 genam.h(7.31 KB)
📄 generic_xlog.h(1.42 KB)
📄 gin.h(2.3 KB)
📄 gin_private.h(33.12 KB)
📄 gist.h(6.51 KB)
📄 gist_private.h(19.82 KB)
📄 gistscan.h(729 B)
📄 hash.h(13.54 KB)
📄 heapam.h(7.76 KB)
📄 heapam_xlog.h(12.61 KB)
📄 hio.h(1.26 KB)
📄 htup.h(3.16 KB)
📄 htup_details.h(28.31 KB)
📄 itup.h(4.36 KB)
📄 multixact.h(5.13 KB)
📄 nbtree.h(30.22 KB)
📄 parallel.h(2.28 KB)
📄 printtup.h(1.03 KB)
📄 reloptions.h(8.88 KB)
📄 relscan.h(5.63 KB)
📄 rewriteheap.h(1.79 KB)
📄 rmgr.h(609 B)
📄 rmgrlist.h(2.97 KB)
📄 sdir.h(1.43 KB)
📄 skey.h(6.26 KB)
📄 slru.h(5.49 KB)
📄 spgist.h(7.04 KB)
📄 spgist_private.h(21.82 KB)
📄 stratnum.h(2.67 KB)
📄 subtrans.h(973 B)
📄 sysattr.h(890 B)
📄 timeline.h(1.59 KB)
📄 transam.h(6.29 KB)
📄 tsmapi.h(2.55 KB)
📄 tupconvert.h(1.4 KB)
📄 tupdesc.h(4.36 KB)
📄 tupmacs.h(7.16 KB)
📄 tuptoaster.h(7.18 KB)
📄 twophase.h(1.82 KB)
📄 twophase_rmgr.h(1.24 KB)
📄 valid.h(1.4 KB)
📄 visibilitymap.h(1.77 KB)
📄 xact.h(12.29 KB)
📄 xlog.h(10.91 KB)
📄 xlog_fn.h(1.41 KB)
📄 xlog_internal.h(10.29 KB)
📄 xlogdefs.h(3.11 KB)
📄 xloginsert.h(2.28 KB)
📄 xlogreader.h(7.11 KB)
📄 xlogrecord.h(7.76 KB)
📄 xlogutils.h(1.76 KB)

Editing: tupdesc.h

/*-------------------------------------------------------------------------
 *
 * tupdesc.h
 *	  POSTGRES tuple descriptor definitions.
 *
 *
 * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/access/tupdesc.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef TUPDESC_H
#define TUPDESC_H

#include "access/attnum.h"
#include "catalog/pg_attribute.h"
#include "nodes/pg_list.h"

typedef struct attrDefault
{
	AttrNumber	adnum;
	char	   *adbin;			/* nodeToString representation of expr */
} AttrDefault;

typedef struct constrCheck
{
	char	   *ccname;
	char	   *ccbin;			/* nodeToString representation of expr */
	bool		ccvalid;
	bool		ccnoinherit;	/* this is a non-inheritable constraint */
} ConstrCheck;

/* This structure contains constraints of a tuple */
typedef struct tupleConstr
{
	AttrDefault *defval;		/* array */
	ConstrCheck *check;			/* array */
	uint16		num_defval;
	uint16		num_check;
	bool		has_not_null;
} TupleConstr;

/*
 * This struct is passed around within the backend to describe the structure
 * of tuples.  For tuples coming from on-disk relations, the information is
 * collected from the pg_attribute, pg_attrdef, and pg_constraint catalogs.
 * Transient row types (such as the result of a join query) have anonymous
 * TupleDesc structs that generally omit any constraint info; therefore the
 * structure is designed to let the constraints be omitted efficiently.
 *
 * Note that only user attributes, not system attributes, are mentioned in
 * TupleDesc; with the exception that tdhasoid indicates if OID is present.
 *
 * If the tupdesc is known to correspond to a named rowtype (such as a table's
 * rowtype) then tdtypeid identifies that type and tdtypmod is -1.  Otherwise
 * tdtypeid is RECORDOID, and tdtypmod can be either -1 for a fully anonymous
 * row type, or a value >= 0 to allow the rowtype to be looked up in the
 * typcache.c type cache.
 *
 * Tuple descriptors that live in caches (relcache or typcache, at present)
 * are reference-counted: they can be deleted when their reference count goes
 * to zero.  Tuple descriptors created by the executor need no reference
 * counting, however: they are simply created in the appropriate memory
 * context and go away when the context is freed.  We set the tdrefcount
 * field of such a descriptor to -1, while reference-counted descriptors
 * always have tdrefcount >= 0.
 */
typedef struct tupleDesc
{
	int			natts;			/* number of attributes in the tuple */
	Form_pg_attribute *attrs;
	/* attrs[N] is a pointer to the description of Attribute Number N+1 */
	TupleConstr *constr;		/* constraints, or NULL if none */
	Oid			tdtypeid;		/* composite type ID for tuple type */
	int32		tdtypmod;		/* typmod for tuple type */
	bool		tdhasoid;		/* tuple has oid attribute in its header */
	int			tdrefcount;		/* reference count, or -1 if not counting */
}	*TupleDesc;

/* Accessor for the i'th attribute of tupdesc. */
#define TupleDescAttr(tupdesc, i) ((tupdesc)->attrs[(i)])

extern TupleDesc CreateTemplateTupleDesc(int natts, bool hasoid);

extern TupleDesc CreateTupleDesc(int natts, bool hasoid,
				Form_pg_attribute *attrs);

extern TupleDesc CreateTupleDescCopy(TupleDesc tupdesc);

extern TupleDesc CreateTupleDescCopyConstr(TupleDesc tupdesc);

extern void TupleDescCopyEntry(TupleDesc dst, AttrNumber dstAttno,
				   TupleDesc src, AttrNumber srcAttno);

extern void FreeTupleDesc(TupleDesc tupdesc);

extern void IncrTupleDescRefCount(TupleDesc tupdesc);
extern void DecrTupleDescRefCount(TupleDesc tupdesc);

#define PinTupleDesc(tupdesc) \
	do { \
		if ((tupdesc)->tdrefcount >= 0) \
			IncrTupleDescRefCount(tupdesc); \
	} while (0)

#define ReleaseTupleDesc(tupdesc) \
	do { \
		if ((tupdesc)->tdrefcount >= 0) \
			DecrTupleDescRefCount(tupdesc); \
	} while (0)

extern bool equalTupleDescs(TupleDesc tupdesc1, TupleDesc tupdesc2);

extern void TupleDescInitEntry(TupleDesc desc,
				   AttrNumber attributeNumber,
				   const char *attributeName,
				   Oid oidtypeid,
				   int32 typmod,
				   int attdim);

extern void TupleDescInitEntryCollation(TupleDesc desc,
							AttrNumber attributeNumber,
							Oid collationid);

extern TupleDesc BuildDescForRelation(List *schema);

extern TupleDesc BuildDescFromLists(List *names, List *types, List *typmods, List *collations);

#endif   /* TUPDESC_H */

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Editing: tupdesc.h

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