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Dept of second thoughts: keep aliasp_item in sync with tlistitem.

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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.
This commit is contained in:
Tom Lane 2017-10-27 18:16:25 -04:00
parent 7e5e8b36d4
commit 21daada10e
1 changed files with 2 additions and 1 deletions
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3
src/backend/parser/parse_relation.c
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@ -2028,7 +2028,6 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
char *label = strVal(lfirst(aliasp_item)); char *label = strVal(lfirst(aliasp_item));
*colnames = lappend(*colnames, makeString(pstrdup(label))); *colnames = lappend(*colnames, makeString(pstrdup(label)));
aliasp_item = lnext(aliasp_item);
} }
if (colvars) if (colvars)
@ -2044,6 +2043,8 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
*colvars = lappend(*colvars, varnode); *colvars = lappend(*colvars, varnode);
} }
aliasp_item = lnext(aliasp_item);
} }
} }
break; break;