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Revise cost_qual_eval() to compute both startup (one-time) and per-tuple
costs for expression evaluation, not only per-tuple cost as before. This extension is needed in order to deal realistically with hashed or materialized sub-selects.
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@ -14,7 +14,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.84 2003/01/05 00:56:40 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.85 2003/01/12 22:35:29 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -853,7 +853,7 @@ adjust_inherited_attrs_mutator(Node *node,
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adjust_inherited_attrs_mutator((Node *) oldinfo->clause, context);
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newinfo->subclauseindices = NIL;
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newinfo->eval_cost = -1; /* reset these too */
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newinfo->eval_cost.startup = -1; /* reset these too */
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newinfo->this_selec = -1;
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newinfo->left_pathkey = NIL; /* and these */
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newinfo->right_pathkey = NIL;
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