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--source include/have_tokudb.inc
SET DEFAULT_STORAGE_ENGINE = 'tokudb';
--disable_warnings
DROP TABLE IF EXISTS t1,t2;
--enable_warnings
--echo #
--echo # Bug#50843: Filesort used instead of clustered index led to
--echo # performance degradation.
--echo #
create table t1(f1 int not null primary key, f2 int);
create table t2(f1 int not null, key (f1));
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (1),(2),(3);
replace_column 9 NA;
explain select t1.* from t1 left join t2 using(f1) group by t1.f1;
alter table t1 drop primary key;
alter table t1 add index (f1) clustering=yes;
replace_column 9 NA;
explain select t1.* from t1 left join t2 using(f1) group by t1.f1;
drop table t1,t2;
--echo #
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