diff options
Diffstat (limited to 'src/backend/commands/functioncmds.c')
| -rw-r--r-- | src/backend/commands/functioncmds.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/backend/commands/functioncmds.c b/src/backend/commands/functioncmds.c index 4125b97e89e..5f1c19eb375 100644 --- a/src/backend/commands/functioncmds.c +++ b/src/backend/commands/functioncmds.c @@ -1517,6 +1517,17 @@ CreateCast(CreateCastStmt *stmt) aclcheck_error(aclresult, ACL_KIND_TYPE, format_type_be(targettypeid)); + /* Domains are allowed for historical reasons, but we warn */ + if (sourcetyptype == TYPTYPE_DOMAIN) + ereport(WARNING, + (errcode(ERRCODE_WRONG_OBJECT_TYPE), + errmsg("cast will be ignored because the source data type is a domain"))); + + else if (targettyptype == TYPTYPE_DOMAIN) + ereport(WARNING, + (errcode(ERRCODE_WRONG_OBJECT_TYPE), + errmsg("cast will be ignored because the target data type is a domain"))); + /* Detemine the cast method */ if (stmt->func != NULL) castmethod = COERCION_METHOD_FUNCTION; |