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SET DEFAULT_STORAGE_ENGINE='tokudb';
DROP TABLE IF EXISTS t1;
create table t1(a int, b int, c int, d int, primary key(a), key(b) clustering=yes)engine=tokudb;
insert into t1 values (1,10,100,1000),(2,20,200,2000),(3,30,300,3000),(4,40,400,4000),(5,50,500,5000),(6,60,600,6000),(7,70,700,7000),(8,80,800,8000),(9,90,900,9000);
select * from t1;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
delete from t1 where d > 8000;
select * from t1;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
explain select * From t1 where b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where
select * From t1 where b > 0;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
delete from t1 where a > 7;
select * from t1;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
explain select * From t1 where b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where
select * From t1 where b > 0;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
delete from t1 where b > 30;
select * from t1;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
explain select * From t1 where b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where
select * From t1 where b > 0;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
drop table t1;
create table t1(a int, b int, c int, d int, key(b) clustering=yes)engine=tokudb;
insert into t1 values (2,20,200,2000),(4,40,400,4000),(1,10,100,1000),(5,50,500,5000),(6,60,600,6000),(7,70,700,7000),(8,80,800,8000),(3,30,300,3000),(9,90,900,9000);
select * from t1;
a b c d
2 20 200 2000
4 40 400 4000
1 10 100 1000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
3 30 300 3000
9 90 900 9000
delete from t1 where d > 8000;
select * from t1;
a b c d
2 20 200 2000
4 40 400 4000
1 10 100 1000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
3 30 300 3000
explain select * From t1 where b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where
select * From t1 where b > 0;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
delete from t1 where b > 30;
select * from t1;
a b c d
2 20 200 2000
1 10 100 1000
3 30 300 3000
explain select * From t1 where b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where
select * From t1 where b > 0;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
drop table t1;
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