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opt / alt / postgresql11 / usr / include / pgsql / server / utils /

📁 ..
📄 acl.h(12.79 KB)
📄 array.h(10.61 KB)
📄 ascii.h(579 B)
📄 attoptcache.h(725 B)
📄 builtins.h(47.77 KB)
📄 bytea.h(1.58 KB)
📄 cash.h(2.07 KB)
📄 catcache.h(7.51 KB)
📄 combocid.h(698 B)
📄 date.h(7.73 KB)
📄 datetime.h(9.92 KB)
📄 datum.h(1.48 KB)
📄 dynahash.h(498 B)
📄 dynamic_loader.h(648 B)
📄 elog.h(12.56 KB)
📄 errcodes.h(19.61 KB)
📄 fmgroids.h(61.09 KB)
📄 fmgrtab.h(1.15 KB)
📄 formatting.h(1.41 KB)
📄 geo_decls.h(15.86 KB)
📄 guc.h(13.19 KB)
📄 guc_tables.h(7.15 KB)
📄 help_config.h(432 B)
📄 hsearch.h(5.51 KB)
📄 inet.h(2.66 KB)
📄 int8.h(4.03 KB)
📄 inval.h(1.81 KB)
📄 json.h(916 B)
📄 logtape.h(1.5 KB)
📄 lsyscache.h(6.51 KB)
📄 memutils.h(5.2 KB)
📄 nabstime.h(5.79 KB)
📄 numeric.h(1.88 KB)
📄 palloc.h(3.92 KB)
📄 pg_crc.h(4.36 KB)
📄 pg_crc_tables.h(19.73 KB)
📄 pg_locale.h(2.59 KB)
📄 pg_lzcompress.h(2.97 KB)
📄 pg_rusage.h(847 B)
📄 plancache.h(8.02 KB)
📄 portal.h(9.22 KB)
📄 probes.h(37.93 KB)
📄 ps_status.h(668 B)
📄 rangetypes.h(7.4 KB)
📄 rbtree.h(2.26 KB)
📄 rel.h(12.27 KB)
📄 relcache.h(3.17 KB)
📄 relmapper.h(1.68 KB)
📄 reltrigger.h(1.95 KB)
📄 resowner.h(5.07 KB)
📄 selfuncs.h(7.5 KB)
📄 snapmgr.h(1.59 KB)
📄 snapshot.h(2.59 KB)
📄 sortsupport.h(5.3 KB)
📄 spccache.h(556 B)
📄 syscache.h(5.51 KB)
📄 timestamp.h(9.5 KB)
📄 tqual.h(3.5 KB)
📄 tuplesort.h(4.62 KB)
📄 tuplestore.h(3.14 KB)
📄 typcache.h(4.26 KB)
📄 tzparser.h(1.13 KB)
📄 uuid.h(861 B)
📄 varbit.h(4.27 KB)
📄 xml.h(3.89 KB)

Editing: datum.h

/*-------------------------------------------------------------------------
 *
 * datum.h
 *	  POSTGRES Datum (abstract data type) manipulation routines.
 *
 * These routines are driven by the 'typbyval' and 'typlen' information,
 * which must previously have been obtained by the caller for the datatype
 * of the Datum.  (We do it this way because in most situations the caller
 * can look up the info just once and use it for many per-datum operations.)
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/datum.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef DATUM_H
#define DATUM_H

/*
 * datumGetSize - find the "real" length of a datum
 */
extern Size datumGetSize(Datum value, bool typByVal, int typLen);

/*
 * datumCopy - make a copy of a datum.
 *
 * If the datatype is pass-by-reference, memory is obtained with palloc().
 */
extern Datum datumCopy(Datum value, bool typByVal, int typLen);

/*
 * datumFree - free a datum previously allocated by datumCopy, if any.
 *
 * Does nothing if datatype is pass-by-value.
 */
extern void datumFree(Datum value, bool typByVal, int typLen);

/*
 * datumIsEqual
 * return true if two datums of the same type are equal, false otherwise.
 *
 * XXX : See comments in the code for restrictions!
 */
extern bool datumIsEqual(Datum value1, Datum value2,
			 bool typByVal, int typLen);

#endif   /* DATUM_H */

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