diff options
Diffstat (limited to 'src/backend/tcop/utility.c')
| -rw-r--r-- | src/backend/tcop/utility.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/backend/tcop/utility.c b/src/backend/tcop/utility.c index 807b64360c8..7d6941ddcef 100644 --- a/src/backend/tcop/utility.c +++ b/src/backend/tcop/utility.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.264 2006/08/12 02:52:05 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.265 2006/08/12 20:05:56 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1225,6 +1225,38 @@ UtilityTupleDescriptor(Node *parsetree) /* + * QueryReturnsTuples + * Return "true" if this Query will send output to the destination. + */ +bool +QueryReturnsTuples(Query *parsetree) +{ + switch (parsetree->commandType) + { + case CMD_SELECT: + /* returns tuples ... unless it's SELECT INTO */ + if (parsetree->into == NULL) + return true; + break; + case CMD_INSERT: + case CMD_UPDATE: + case CMD_DELETE: + /* the forms with RETURNING return tuples */ + if (parsetree->returningList) + return true; + break; + case CMD_UTILITY: + return UtilityReturnsTuples(parsetree->utilityStmt); + case CMD_UNKNOWN: + case CMD_NOTHING: + /* probably shouldn't get here */ + break; + } + return false; /* default */ +} + + +/* * CreateCommandTag * utility to get a string representation of the * command operation, given a raw (un-analyzed) parsetree. |