mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-30 04:51:27 +02:00
2ff501590b
Also performed an initial run through of upgrading our Copyright date to extend to 2005 ... first run here was very simple ... change everything where: grep 1996-2004 && the word 'Copyright' ... scanned through the generated list with 'less' first, and after, to make sure that I only picked up the right entries ...
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* not_in.c
|
|
* Executes the "not_in" operator for any data type
|
|
*
|
|
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* $PostgreSQL: pgsql/src/backend/utils/adt/not_in.c,v 1.42 2004/12/31 22:01:22 pgsql Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
/*
|
|
*
|
|
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
|
* X HACK WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! X
|
|
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
|
*
|
|
* This code is the OLD not-in code that is HACKED
|
|
* into place until operators that can have arguments as
|
|
* columns are ******REALLY****** implemented!!!!!!!!!!!
|
|
*
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
|
|
#include "access/heapam.h"
|
|
#include "catalog/namespace.h"
|
|
#include "parser/parse_relation.h"
|
|
#include "utils/builtins.h"
|
|
|
|
|
|
/* ----------------------------------------------------------------
|
|
*
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
Datum
|
|
int4notin(PG_FUNCTION_ARGS)
|
|
{
|
|
int32 not_in_arg = PG_GETARG_INT32(0);
|
|
text *relation_and_attr = PG_GETARG_TEXT_P(1);
|
|
List *names;
|
|
int nnames;
|
|
RangeVar *relrv;
|
|
char *attribute;
|
|
Relation relation_to_scan;
|
|
int32 integer_value;
|
|
HeapTuple current_tuple;
|
|
HeapScanDesc scan_descriptor;
|
|
bool isNull,
|
|
retval;
|
|
int attrid;
|
|
Datum value;
|
|
|
|
/* Parse the argument */
|
|
|
|
names = textToQualifiedNameList(relation_and_attr, "int4notin");
|
|
nnames = list_length(names);
|
|
if (nnames < 2)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_NAME),
|
|
errmsg("invalid name syntax"),
|
|
errhint("Must provide \"relationname.columnname\".")));
|
|
attribute = strVal(llast(names));
|
|
names = list_truncate(names, nnames - 1);
|
|
relrv = makeRangeVarFromNameList(names);
|
|
|
|
/* Open the relation and get a relation descriptor */
|
|
relation_to_scan = heap_openrv(relrv, AccessShareLock);
|
|
|
|
/* Find the column to search */
|
|
attrid = attnameAttNum(relation_to_scan, attribute, true);
|
|
|
|
scan_descriptor = heap_beginscan(relation_to_scan, SnapshotNow,
|
|
0, (ScanKey) NULL);
|
|
|
|
retval = true;
|
|
|
|
/* do a scan of the relation, and do the check */
|
|
while ((current_tuple = heap_getnext(scan_descriptor, ForwardScanDirection)) != NULL)
|
|
{
|
|
value = heap_getattr(current_tuple,
|
|
(AttrNumber) attrid,
|
|
RelationGetDescr(relation_to_scan),
|
|
&isNull);
|
|
if (isNull)
|
|
continue;
|
|
integer_value = DatumGetInt32(value);
|
|
if (not_in_arg == integer_value)
|
|
{
|
|
retval = false;
|
|
break; /* can stop scanning now */
|
|
}
|
|
}
|
|
|
|
/* close the relation */
|
|
heap_endscan(scan_descriptor);
|
|
heap_close(relation_to_scan, AccessShareLock);
|
|
|
|
PG_RETURN_BOOL(retval);
|
|
}
|
|
|
|
Datum
|
|
oidnotin(PG_FUNCTION_ARGS)
|
|
{
|
|
Oid the_oid = PG_GETARG_OID(0);
|
|
|
|
#ifdef NOT_USED
|
|
text *relation_and_attr = PG_GETARG_TEXT_P(1);
|
|
#endif
|
|
|
|
if (the_oid == InvalidOid)
|
|
PG_RETURN_BOOL(false);
|
|
/* XXX assume oid maps to int4 */
|
|
return int4notin(fcinfo);
|
|
}
|