diff options
Diffstat (limited to 'src/backend/utils/cache')
| -rw-r--r-- | src/backend/utils/cache/catcache.c | 9 | ||||
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 16 |
2 files changed, 23 insertions, 2 deletions
diff --git a/src/backend/utils/cache/catcache.c b/src/backend/utils/cache/catcache.c index 07e1cd76962..d05930bc4cf 100644 --- a/src/backend/utils/cache/catcache.c +++ b/src/backend/utils/cache/catcache.c @@ -170,13 +170,18 @@ int4hashfast(Datum datum) static bool texteqfast(Datum a, Datum b) { - return DatumGetBool(DirectFunctionCall2(texteq, a, b)); + /* + * The use of DEFAULT_COLLATION_OID is fairly arbitrary here. We just + * want to take the fast "deterministic" path in texteq(). + */ + return DatumGetBool(DirectFunctionCall2Coll(texteq, DEFAULT_COLLATION_OID, a, b)); } static uint32 texthashfast(Datum datum) { - return DatumGetInt32(DirectFunctionCall1(hashtext, datum)); + /* analogously here as in texteqfast() */ + return DatumGetInt32(DirectFunctionCall1Coll(hashtext, DEFAULT_COLLATION_OID, datum)); } static bool diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index e88c45d268a..59e6bcd856c 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -908,6 +908,22 @@ get_collation_name(Oid colloid) return NULL; } +bool +get_collation_isdeterministic(Oid colloid) +{ + HeapTuple tp; + Form_pg_collation colltup; + bool result; + + tp = SearchSysCache1(COLLOID, ObjectIdGetDatum(colloid)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for collation %u", colloid); + colltup = (Form_pg_collation) GETSTRUCT(tp); + result = colltup->collisdeterministic; + ReleaseSysCache(tp); + return result; +} + /* ---------- CONSTRAINT CACHE ---------- */ /* |