Update of /cvsroot/monetdb/pathfinder/compiler/algebra
In directory sc8-pr-cvs7.sourceforge.net:/tmp/cvs-serv3177/algebra
Modified Files:
builtins.c
Log Message:
-- Changed the implementation of except: SQL generated XQuery expression
can now safely use EXCEPT ALL instead of EXCEPT as the left side of all
difference operators is key.
Index: builtins.c
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/algebra/builtins.c,v
retrieving revision 1.47
retrieving revision 1.48
diff -u -d -r1.47 -r1.48
--- builtins.c 9 Jan 2007 16:00:53 -0000 1.47
+++ builtins.c 1 Mar 2007 13:22:37 -0000 1.48
@@ -2372,27 +2372,27 @@
PFbui_op_except (const PFla_op_t *loop, bool ordering,
struct PFla_pair_t *args)
{
- PFla_op_t *distinct;
+ PFla_op_t *difference;
(void) loop;
- distinct = distinct (difference (
- project (args[0].rel,
- proj (att_iter, att_iter),
- proj (att_item, att_item)),
- project (args[1].rel,
- proj (att_iter, att_iter),
- proj (att_item, att_item))));
+ difference = difference (
+ distinct (project (args[0].rel,
+ proj (att_iter, att_iter),
+ proj (att_item, att_item))),
+ project (args[1].rel,
+ proj (att_iter, att_iter),
+ proj (att_item, att_item)));
if (ordering)
return (struct PFla_pair_t) {
- .rel = rownum (distinct,
+ .rel = rownum (difference,
att_pos, sortby (att_item), att_iter),
/* result nodes can only originate from first argument */
.frag = args[0].frag };
else
return (struct PFla_pair_t) {
- .rel = number (distinct, att_pos, att_iter),
+ .rel = number (difference, att_pos, att_iter),
/* result nodes can only originate from first argument */
.frag = args[0].frag };
}
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