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Make the world at least somewhat safe for zero-column tables, and

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remove the special case in ALTER DROP COLUMN to prohibit dropping a
table's last column.
This commit is contained in:
Tom Lane
2002-09-28 20:00:19 +00:00
parent 23616b47d5
commit 6d0d15c451
6 changed files with 64 additions and 81 deletions
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6
src/backend/parser/parse_target.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.90 2002/09/18 21:35:22 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.91 2002/09/28 20:00:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -386,6 +386,7 @@ static List *
ExpandAllTables(ParseState *pstate)
{
List *target = NIL;
bool found_table = false;
List *ns;
foreach(ns, pstate->p_namespace)
@ -413,11 +414,12 @@ ExpandAllTables(ParseState *pstate)
if (!rte->inFromCl)
continue;
found_table = true;
target = nconc(target, expandRelAttrs(pstate, rte));
}
/* Check for SELECT *; */
if (target == NIL)
if (!found_table)
elog(ERROR, "Wildcard with no tables specified not allowed");
return target;