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path: root/src/backend/utils/cache/lsyscache.c
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Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
-rw-r--r--src/backend/utils/cache/lsyscache.c38
1 files changed, 6 insertions, 32 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c
index 6bcaf30ffe..877e50d873 100644
--- a/src/backend/utils/cache/lsyscache.c
+++ b/src/backend/utils/cache/lsyscache.c
@@ -904,44 +904,17 @@ get_atttypmod(Oid relid, AttrNumber attnum)
}
/*
- * get_attcollation
+ * get_atttypetypmodcoll
*
- * Given the relation id and the attribute number,
- * return the "attcollation" field from the attribute relation.
- */
-Oid
-get_attcollation(Oid relid, AttrNumber attnum)
-{
- HeapTuple tp;
-
- tp = SearchSysCache2(ATTNUM,
- ObjectIdGetDatum(relid),
- Int16GetDatum(attnum));
- if (HeapTupleIsValid(tp))
- {
- Form_pg_attribute att_tup = (Form_pg_attribute) GETSTRUCT(tp);
- Oid result;
-
- result = att_tup->attcollation;
- ReleaseSysCache(tp);
- return result;
- }
- else
- return InvalidOid;
-}
-
-/*
- * get_atttypetypmod
- *
- * A two-fer: given the relation id and the attribute number,
- * fetch both type OID and atttypmod in a single cache lookup.
+ * A three-fer: given the relation id and the attribute number,
+ * fetch atttypid, atttypmod, and attcollation in a single cache lookup.
*
* Unlike the otherwise-similar get_atttype/get_atttypmod, this routine
* raises an error if it can't obtain the information.
*/
void
-get_atttypetypmod(Oid relid, AttrNumber attnum,
- Oid *typid, int32 *typmod)
+get_atttypetypmodcoll(Oid relid, AttrNumber attnum,
+ Oid *typid, int32 *typmod, Oid *collid)
{
HeapTuple tp;
Form_pg_attribute att_tup;
@@ -956,6 +929,7 @@ get_atttypetypmod(Oid relid, AttrNumber attnum,
*typid = att_tup->atttypid;
*typmod = att_tup->atttypmod;
+ *collid = att_tup->attcollation;
ReleaseSysCache(tp);
}