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valid.h
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1/*-------------------------------------------------------------------------
2 *
3 * valid.h
4 * POSTGRES tuple qualification validity definitions.
5 *
6 *
7 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/access/valid.h
11 *
12 *-------------------------------------------------------------------------
13 */
14#ifndef VALID_H
15#define VALID_H
16
17#include "access/htup.h"
18#include "access/htup_details.h"
19#include "access/skey.h"
20#include "access/tupdesc.h"
21
22/*
23 * HeapKeyTest
24 *
25 * Test a heap tuple to see if it satisfies a scan key.
26 */
27static inline bool
28HeapKeyTest(HeapTuple tuple, TupleDesc tupdesc, int nkeys, ScanKey keys)
29{
30 int cur_nkeys = nkeys;
31 ScanKey cur_key = keys;
32
33 for (; cur_nkeys--; cur_key++)
34 {
35 Datum atp;
36 bool isnull;
37 Datum test;
38
39 if (cur_key->sk_flags & SK_ISNULL)
40 return false;
41
42 atp = heap_getattr(tuple, cur_key->sk_attno, tupdesc, &isnull);
43
44 if (isnull)
45 return false;
46
47 test = FunctionCall2Coll(&cur_key->sk_func,
48 cur_key->sk_collation,
49 atp, cur_key->sk_argument);
50
51 if (!DatumGetBool(test))
52 return false;
53 }
54
55 return true;
56}
57
58#endif /* VALID_H */
FunctionCall2Coll
Datum FunctionCall2Coll(FmgrInfo *flinfo, Oid collation, Datum arg1, Datum arg2)
Definition: fmgr.c:1149
htup_details.h
heap_getattr
static Datum heap_getattr(HeapTuple tup, int attnum, TupleDesc tupleDesc, bool *isnull)
Definition: htup_details.h:904
DatumGetBool
static bool DatumGetBool(Datum X)
Definition: postgres.h:95
Datum
uintptr_t Datum
Definition: postgres.h:69
test
static void test(void)
Definition: preproc-autoprep.c:26
SK_ISNULL
#define SK_ISNULL
Definition: skey.h:115
ScanKeyData::sk_flags
int sk_flags
Definition: skey.h:66
ScanKeyData::sk_argument
Datum sk_argument
Definition: skey.h:72
ScanKeyData::sk_func
FmgrInfo sk_func
Definition: skey.h:71
ScanKeyData::sk_collation
Oid sk_collation
Definition: skey.h:70
ScanKeyData::sk_attno
AttrNumber sk_attno
Definition: skey.h:67
HeapKeyTest
static bool HeapKeyTest(HeapTuple tuple, TupleDesc tupdesc, int nkeys, ScanKey keys)
Definition: valid.h:28