Update of /cvsroot/monetdb/pathfinder/compiler/algebra/opt
In directory sc8-pr-cvs16.sourceforge.net:/tmp/cvs-serv1643/algebra/opt
Modified Files:
Tag: XQuery_0-24
opt_join_pd.c
Log Message:
-- circumvent bugs #1981491 and #1908822 for the release.
This 'hack' does not fix the real problem (that we have to get rid
of bit-encoded column names), but just disables some optimizations
in case we might get into trouble. Thus we can apply less rewrites
and get 'suboptimal' plans.
THIS IS A RELEASE ONLY CHECKIN --- PLEASE DO NOT PROPAGATE!
U opt_join_pd.c
Index: opt_join_pd.c
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/algebra/opt/opt_join_pd.c,v
retrieving revision 1.46.2.1
retrieving revision 1.46.2.2
diff -u -d -r1.46.2.1 -r1.46.2.2
--- opt_join_pd.c 28 May 2008 11:37:25 -0000 1.46.2.1
+++ opt_join_pd.c 2 Jun 2008 08:44:30 -0000 1.46.2.2
@@ -580,6 +580,11 @@
} break;
case la_project:
+ /* disable rewrite in case we might get wider relations
+ than we can map back to the bit-encoded (ori) column
+ names */
+ if (PFarray_last (rproj) + L(lp)->schema.count < 30)
+
/* Arbitrary projections are pushed through the join operator
by:
1.) merging the projection lists of the projection
-------------------------------------------------------------------------
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