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SET DEFAULT_STORAGE_ENGINE='tokudb';
DROP TABLE IF EXISTS t1;
set tokudb_prelock_empty=off;
create table t1(a int, b int, c int, d int, primary key(a), key(b) clustering=yes)engine=tokudb;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) DEFAULT NULL,
`c` int(11) DEFAULT NULL,
`d` int(11) DEFAULT NULL,
PRIMARY KEY (`a`),
KEY `b` (`b`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1
create index foo on t1(c,d) clustering=yes;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) DEFAULT NULL,
`c` int(11) DEFAULT NULL,
`d` int(11) DEFAULT NULL,
PRIMARY KEY (`a`),
KEY `b` (`b`) `clustering`=yes,
KEY `foo` (`c`,`d`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1
alter table t1 drop primary key;
alter table t1 add primary key (a,b,c,d);
alter table t1 add key bar(d,c,b,a) clustering=yes;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) NOT NULL,
`c` int(11) NOT NULL,
`d` int(11) NOT NULL,
PRIMARY KEY (`a`,`b`,`c`,`d`),
KEY `b` (`b`) `clustering`=yes,
KEY `foo` (`c`,`d`) `clustering`=yes,
KEY `bar` (`d`,`c`,`b`,`a`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1
insert into t1 value
(1,1,1,1),(2,2,2,2),(3,3,3,3),(4,4,4,4),(5,5,5,5),(6,6,6,6),
(32,54,12,56);
explain select * from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 16 NULL 7 Using index
select * from t1;
a b c d
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
32 54 12 56
explain select d from t1 where d > 30;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range bar bar 4 NULL 1 Using where; Using index
select * from t1 where d > 30;
a b c d
32 54 12 56
drop table t1;
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