Update of /cvsroot/monetdb/pathfinder/compiler/algebra/map
In directory sc8-pr-cvs16.sourceforge.net:/tmp/cvs-serv7122/algebra/map
Modified Files:
Tag: XQuery_0-24
resolve_proxy.c
Log Message:
-- Disable the blocking step and semijoin operators
and replace them by step_join+distinct and eqjoin+distinct.
This change gives the optimizer more freedom and removes the last
traces of staircase-join from the logical plans.
The physical algebra planner will try to implement step_join whenever
possible with a duplicate-eliminating staircase-join operator.
U resolve_proxy.c
Index: resolve_proxy.c
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/algebra/map/resolve_proxy.c,v
retrieving revision 1.12
retrieving revision 1.12.2.1
diff -u -d -r1.12 -r1.12.2.1
--- resolve_proxy.c 16 Feb 2008 19:42:39 -0000 1.12
+++ resolve_proxy.c 3 Jun 2008 11:53:38 -0000 1.12.2.1
@@ -64,6 +64,7 @@
if (p->kind == la_proxy || p->kind == la_proxy_base)
*p = *PFla_dummy (p->child[0]);
+#if 0 /* disable step_join -> step rewrite */
/* Replace the duplicate generating path step operators
by the more explicit variant:
@@ -145,6 +146,7 @@
p->schema.count,
top_proj);
}
+#endif
}
/**
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