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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), clustering key(b), key (c))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);
explain select * from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL NULL; Using where
select * from t1 where a > 5;
a b c d
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where b > 30;
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 > 30;
a b c d
4 40 400 4000
5 50 500 5000
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select * from t1 where c > 750;
a b c d
8 80 800 8000
9 90 900 9000
explain select a from t1 where a > 8;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL NULL; Using where; Using index
select a from t1 where a > 8;
a
9
explain select a,b from t1 where b > 30;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where; Using index
select a,b from t1 where b > 30;
a b
4 40
5 50
6 60
7 70
8 80
9 90
explain select a,b from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select a,c from t1 where c > 750;
a c
8 800
9 900
delete from t1 where b>30 and b < 60;
select * from t1;
a b c d
1 10 100 1000
2 20 200 2000
3 30 300 3000
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL NULL; Using where
select * from t1 where a > 5;
a b c d
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where b > 30;
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 > 30;
a b c d
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select * from t1 where c > 750;
a b c d
8 80 800 8000
9 90 900 9000
explain select a from t1 where a > 8;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL NULL; Using where; Using index
select a from t1 where a > 8;
a
9
explain select a,b from t1 where b > 30;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 5 NULL NULL; Using where; Using index
select a,b from t1 where b > 30;
a b
6 60
7 70
8 80
9 90
explain select a,b from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select a,c from t1 where c > 750;
a c
8 800
9 900
alter table t1 drop primary key;
explain select * from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL NULL; Using where
select * from t1 where a > 5;
a b c d
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where b > 30;
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 > 30;
a b c d
6 60 600 6000
7 70 700 7000
8 80 800 8000
9 90 900 9000
explain select * from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select * from t1 where c > 750;
a b c d
8 80 800 8000
9 90 900 9000
explain select a from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL NULL; Using where
select a from t1 where a > 5;
a
6
7
8
9
explain select a,b from t1 where b > 30;
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 a,b from t1 where b > 30;
a b
6 60
7 70
8 80
9 90
explain select a,b from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range c c 5 NULL NULL; Using where
select a,c from t1 where c > 750;
a c
8 800
9 900
delete from t1 where b > 10 and b < 90;
select * from t1;
a b c d
1 10 100 1000
9 90 900 9000
explain select * from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL NULL; Using where
select * from t1 where a > 5;
a b c d
9 90 900 9000
explain select * from t1 where b > 30;
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 > 30;
a b c d
9 90 900 9000
explain select * from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL c NULL NULL NULL NULL; Using where
select * from t1 where c > 750;
a b c d
9 90 900 9000
explain select a from t1 where a > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL NULL; Using where
select a from t1 where a > 5;
a
9
explain select a,b from t1 where b > 30;
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 a,b from t1 where b > 30;
a b
9 90
explain select a,b from t1 where c > 750;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL c NULL NULL NULL NULL; Using where
select a,c from t1 where c > 750;
a c
9 900
drop table t1;
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