#2968 test the mysql query planner's ability to select clustering keys over...

#2968 test the mysql query planner's ability to select clustering keys over full table scans for join keys refs[t:2968]

git-svn-id: file:///svn/mysql/tests/mysql-test@24879 c7de825b-a66e-492c-adef-691d508d4ae1

mysql-test/suite/tokudb.cluster/t/2968-0.test

+# test that the query planner picks clustering keys for joins
+
+# create table s
+drop table if exists s;
+create table s (a int, b int, c int) engine=tokudb;
+
+# populate table s
+let $a = 10;
+while ($a) {
+    let $b = 10;
+    while ($b) {
+        let $c = 10;
+        while ($c) {
+            eval insert into s values ($a,$b,$c);
+	    dec $c;
+	}
+	dec $b;
+    }
+    dec $a;
+}
+    
+# create table t
+drop table if exists t;
+create table t like s;
+insert into t select * from s;
+
+# join with no keys
+show create table s;
+show create table t;
+explain select straight_join * from s,t where s.b = t.b;
+
+# join with clustering keys
+alter table s add clustering key(b);
+alter table t add clustering key(b);
+show create table s;
+show create table t;
+explain select straight_join * from s,t where s.b = t.b;
+
+
+
+