diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/rewrite/rewriteHandler.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/backend/rewrite/rewriteHandler.c b/src/backend/rewrite/rewriteHandler.c index 88a9e95e339..54fd6d6fb28 100644 --- a/src/backend/rewrite/rewriteHandler.c +++ b/src/backend/rewrite/rewriteHandler.c @@ -3585,15 +3585,29 @@ RewriteQuery(Query *parsetree, List *rewrite_events) /* * Currently we can only handle unconditional, single-statement DO - * INSTEAD rules correctly; we have to get exactly one Query out of - * the rewrite operation to stuff back into the CTE node. + * INSTEAD rules correctly; we have to get exactly one non-utility + * Query out of the rewrite operation to stuff back into the CTE node. */ if (list_length(newstuff) == 1) { - /* Push the single Query back into the CTE node */ + /* Must check it's not a utility command */ ctequery = linitial_node(Query, newstuff); + if (!(ctequery->commandType == CMD_SELECT || + ctequery->commandType == CMD_UPDATE || + ctequery->commandType == CMD_INSERT || + ctequery->commandType == CMD_DELETE)) + { + /* + * Currently it could only be NOTIFY; this error message will + * need work if we ever allow other utility commands in rules. + */ + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("DO INSTEAD NOTIFY rules are not supported for data-modifying statements in WITH"))); + } /* WITH queries should never be canSetTag */ Assert(!ctequery->canSetTag); + /* Push the single Query back into the CTE node */ cte->ctequery = (Node *) ctequery; } else if (newstuff == NIL) |