diff options
Diffstat (limited to 'src/include/access/valid.h')
| -rw-r--r-- | src/include/access/valid.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/include/access/valid.h b/src/include/access/valid.h new file mode 100644 index 0000000..443d4da --- /dev/null +++ b/src/include/access/valid.h @@ -0,0 +1,69 @@ +/*------------------------------------------------------------------------- + * + * valid.h + * POSTGRES tuple qualification validity definitions. + * + * + * Portions Copyright (c) 1996-2020, 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) + +#endif /* VALID_H */ |