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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.
This commit is contained in:
Tom Lane 2017-10-27 18:16:25 -04:00
parent 80e79718d0
commit a4c11c1031
1 changed files with 2 additions and 1 deletions
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3
src/backend/parser/parse_relation.c
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@ -1619,7 +1619,6 @@ 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)
@ -1635,6 +1634,8 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
*colvars = lappend(*colvars, varnode);
}
aliasp_item = lnext(aliasp_item);
}
}
break;