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source include/have_tokudb.inc;
# 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 key(b) clustering=yes;
alter table t add key(b) clustering=yes;
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;
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