Changeset: c7f0e92444a9 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/c7f0e92444a9
Modified Files:
monetdb5/optimizer/opt_dataflow.c
Branch: parappend
Log Message:
Reorder clauses to improve hit ratio
Column names are more likely to differ than schema- or table names.
diffs (29 lines):
diff --git a/monetdb5/optimizer/opt_dataflow.c
b/monetdb5/optimizer/opt_dataflow.c
--- a/monetdb5/optimizer/opt_dataflow.c
+++ b/monetdb5/optimizer/opt_dataflow.c
@@ -253,9 +253,9 @@ sqlBreakpoint(MalBlkPtr mb, InstrPtr *fi
str my_tname = get_sql_tname(mb, instr);
str my_cname = get_sql_cname(mb, instr);
for (InstrPtr *q = first; q < p; q++) {
- str sname = get_sql_sname(mb, *q);
- if (strcmp(my_sname, sname) != 0) {
- // different sname, no conflict
+ str cname = get_sql_cname(mb, *q);
+ if (strcmp(my_cname, cname) != 0) {
+ // different cname, no conflict
continue;
}
str tname = get_sql_tname(mb, *q);
@@ -263,9 +263,9 @@ sqlBreakpoint(MalBlkPtr mb, InstrPtr *fi
// different tname, no conflict
continue;
}
- str cname = get_sql_cname(mb, *q);
- if (strcmp(my_cname, cname) != 0) {
- // different cname, no conflict
+ str sname = get_sql_sname(mb, *q);
+ if (strcmp(my_sname, sname) != 0) {
+ // different sname, no conflict
continue;
}
// Found a statement in the region that works on the same
column so this is a breakpoint
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