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Commita62a359

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Fix Assert failure in ExpandColumnRefStar --- what I thought was a can't
happen condition can happen given incorrect input. The real problem is thatgram.y should try harder to distinguish * from "*" --- the latter is a legalcolumn name per spec, and someday we ought to treat it that way. Howeverfixing that is too invasive for a back-patch, and it's too late for the 8.3cycle too. So just reduce the Assert to a plain elog for now. Per reportfrom NikhilS.
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‎src/backend/parser/parse_target.c

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/parser/parse_target.c,v 1.155 2007/09/06 17:31:58 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/parser/parse_target.c,v 1.156 2007/09/27 17:42:03 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -826,9 +826,12 @@ ExpandColumnRefStar(ParseState *pstate, ColumnRef *cref,
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* (e.g., SELECT * FROM emp, dept)
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*
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* Since the grammar only accepts bare '*' at top level of SELECT, we
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* need not handle the targetlist==false case here.
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* need not handle the targetlist==false case here. However, we must
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* test for it because the grammar currently fails to distinguish
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* a quoted name "*" from a real asterisk.
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*/
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Assert(targetlist);
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if (!targetlist)
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elog(ERROR,"invalid use of *");
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returnExpandAllTables(pstate);
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}

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