diff options
Diffstat (limited to 'src/backend/utils/adt/ruleutils.c')
| -rw-r--r-- | src/backend/utils/adt/ruleutils.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index fd21152b495..72b7e3c3d84 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.285 2008/10/04 21:56:54 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.286 2008/10/06 17:39:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -3237,6 +3237,18 @@ get_name_for_var_field(Var *var, int fieldno, Node *expr; /* + * If it's a RowExpr that was expanded from a whole-row Var, use the + * column names attached to it. + */ + if (IsA(var, RowExpr)) + { + RowExpr *r = (RowExpr *) var; + + if (fieldno > 0 && fieldno <= list_length(r->colnames)) + return strVal(list_nth(r->colnames, fieldno - 1)); + } + + /* * If it's a Var of type RECORD, we have to find what the Var refers to; * if not, we can use get_expr_result_type. If that fails, we try * lookup_rowtype_tupdesc, which will probably fail too, but will ereport |