diff options
Diffstat (limited to 'src/backend/parser/parse_relation.c')
| -rw-r--r-- | src/backend/parser/parse_relation.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c index d603ce2f423..0dbf5cbf38a 100644 --- a/src/backend/parser/parse_relation.c +++ b/src/backend/parser/parse_relation.c @@ -2399,6 +2399,24 @@ attnumTypeId(Relation rd, int attid) } /* + * given attribute id, return collation of that attribute + * + * This should only be used if the relation is already heap_open()'ed. + */ +Oid +attnumCollationId(Relation rd, int attid) +{ + if (attid <= 0) + { + /* All system attributes are of noncollatable types. */ + return InvalidOid; + } + if (attid > rd->rd_att->natts) + elog(ERROR, "invalid attribute number %d", attid); + return rd->rd_att->attrs[attid - 1]->attcollation; +} + +/* * Generate a suitable error about a missing RTE. * * Since this is a very common type of error, we work rather hard to |