mariadb/mysql-test/suite/tokudb/t/cluster_2968-1.test

# test that the query planner picks clustering keys for joins

# create table s
--disable_warnings
drop table if exists s;
--enable_warnings
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
--disable_warnings
drop table if exists t;
--enable_warnings
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 uncovered keys
alter table s add key(b);
alter table t add key(b);
show create table s;
show create table t;
explain select straight_join * from s,t where s.b = t.b;

# join with uncovered keys and 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;

# join with clustering keys
alter table s drop key b;
alter table t drop key b;
show create table s;
show create table t;
explain select straight_join * from s,t where s.b = t.b;

# put the uncovered keys back
alter table s add key(b);
alter table t add key(b);
show create table s;
show create table t;
explain select straight_join * from s,t where s.b = t.b;

# cleanup
drop table s,t;