diff options
Diffstat (limited to 'src/backend/executor/execScan.c')
| -rw-r--r-- | src/backend/executor/execScan.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/backend/executor/execScan.c b/src/backend/executor/execScan.c index 7ee4dc3841..c0fddcec22 100644 --- a/src/backend/executor/execScan.c +++ b/src/backend/executor/execScan.c @@ -12,7 +12,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/execScan.c,v 1.41 2007/02/02 00:07:03 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/execScan.c,v 1.42 2007/11/15 21:14:34 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -217,13 +217,14 @@ tlist_matches_tupdesc(PlanState *ps, List *tlist, Index varno, TupleDesc tupdesc return false; /* out of order */ if (att_tup->attisdropped) return false; /* table contains dropped columns */ + /* - * Note: usually the Var's type should match the tupdesc exactly, - * but in situations involving unions of columns that have different + * Note: usually the Var's type should match the tupdesc exactly, but + * in situations involving unions of columns that have different * typmods, the Var may have come from above the union and hence have * typmod -1. This is a legitimate situation since the Var still - * describes the column, just not as exactly as the tupdesc does. - * We could change the planner to prevent it, but it'd then insert + * describes the column, just not as exactly as the tupdesc does. We + * could change the planner to prevent it, but it'd then insert * projection steps just to convert from specific typmod to typmod -1, * which is pretty silly. */ |