From 21daada10ebf444fb1fc06a705fb22b890867083 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Fri, 27 Oct 2017 18:16:25 -0400 Subject: [PATCH] Dept of second thoughts: keep aliasp_item in sync with tlistitem. Commit d5b760ecb wasn't quite right, on second thought: if the caller didn't ask for column names then it would happily emit more Vars than if the caller did ask for column names. This is surely not a good idea. Advance the aliasp_item whether or not we're preparing a colnames list. --- src/backend/parser/parse_relation.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c index f4542b099e8..38ef66dbcee 100644 --- a/src/backend/parser/parse_relation.c +++ b/src/backend/parser/parse_relation.c @@ -2028,7 +2028,6 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up, char *label = strVal(lfirst(aliasp_item)); *colnames = lappend(*colnames, makeString(pstrdup(label))); - aliasp_item = lnext(aliasp_item); } if (colvars) @@ -2044,6 +2043,8 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up, *colvars = lappend(*colvars, varnode); } + + aliasp_item = lnext(aliasp_item); } } break;