greenplumn valid 源码
greenplumn valid 代码
文件路径：/src/include/access/valid.h
/*-------------------------------------------------------------------------
*
* valid.h
* POSTGRES tuple qualification validity definitions.
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/valid.h
*
*-------------------------------------------------------------------------
*/
#ifndef VALID_H
#define VALID_H
/*
* HeapKeyTest
*
* Test a heap tuple to see if it satisfies a scan key.
*/
#define HeapKeyTest(tuple, \
tupdesc, \
nkeys, \
keys, \
result) \
do \
{ \
/* Use underscores to protect the variables passed in as parameters */ \
int __cur_nkeys = (nkeys); \
ScanKey __cur_keys = (keys); \
\
(result) = true; /* may change */ \
for (; __cur_nkeys--; __cur_keys++) \
{ \
Datum __atp; \
bool __isnull; \
Datum __test; \
\
if (__cur_keys->sk_flags & SK_ISNULL) \
{ \
(result) = false; \
break; \
} \
\
__atp = heap_getattr((tuple), \
__cur_keys->sk_attno, \
(tupdesc), \
&__isnull); \
\
if (__isnull) \
{ \
(result) = false; \
break; \
} \
\
__test = FunctionCall2Coll(&__cur_keys->sk_func, \
__cur_keys->sk_collation, \
__atp, __cur_keys->sk_argument); \
\
if (!DatumGetBool(__test)) \
{ \
(result) = false; \
break; \
} \
} \
} while (0)
/*
* HeapKeyTestUsingSlot
*
* Same as HeapKeyTest but pass a slot instead of a heap tuple.
* Eventually we may want to get rid of HeapKeyTest all together
* and instead only do the test through a slot, which should be
* faster.
*/
#define HeapKeyTestUsingSlot(slot, \
nkeys, \
keys, \
result) \
do \
{ \
/* Use underscores to protect the variables passed in as parameters */ \
int __cur_nkeys = (nkeys); \
ScanKey __cur_keys = (keys); \
\
(result) = true; /* may change */ \
for (; __cur_nkeys--; __cur_keys++) \
{ \
Datum __atp; \
bool __isnull; \
Datum __test; \
\
if (__cur_keys->sk_flags & SK_ISNULL) \
{ \
(result) = false; \
break; \
} \
\
__atp = slot_getattr(slot, \
__cur_keys->sk_attno, \
&__isnull); \
\
if (__isnull) \
{ \
(result) = false; \
break; \
} \
\
__test = FunctionCall2(&__cur_keys->sk_func, \
__atp, __cur_keys->sk_argument); \
\
if (!DatumGetBool(__test)) \
{ \
(result) = false; \
break; \
} \
} \
} while (0)
#endif /* VALID_H */
相关信息
相关文章
greenplumn appendonly_compaction 源码
greenplumn appendonly_visimap 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦