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SET DEFAULT_STORAGE_ENGINE='tokudb';
DROP TABLE IF EXISTS foo;
set session tokudb_disable_slow_alter=ON;
create table foo (a int, b bigint, c char(10), d varchar(10), e text, primary key (a), key(b), key (d) clustering=yes)engine=TOkuDB;
insert into foo values (1,10,"cc","dddd","eeeee");
select * from foo;
a b c d e
1 10 cc dddd eeeee
alter table foo change a aa int;
show create table foo;
Table Create Table
foo CREATE TABLE `foo` (
`aa` int(11) NOT NULL DEFAULT '0',
`b` bigint(20) DEFAULT NULL,
`c` char(10) DEFAULT NULL,
`d` varchar(10) DEFAULT NULL,
`e` text,
PRIMARY KEY (`aa`),
KEY `b` (`b`),
KEY `d` (`d`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1 `compression`='tokudb_zlib'
select * from foo;
aa b c d e
1 10 cc dddd eeeee
explain select * from foo where aa > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE foo index PRIMARY d 13 NULL 1 Using where; Using index
select * from foo where aa > 0;
aa b c d e
1 10 cc dddd eeeee
alter table foo change b bb bigint;
show create table foo;
Table Create Table
foo CREATE TABLE `foo` (
`aa` int(11) NOT NULL DEFAULT '0',
`bb` bigint(20) DEFAULT NULL,
`c` char(10) DEFAULT NULL,
`d` varchar(10) DEFAULT NULL,
`e` text,
PRIMARY KEY (`aa`),
KEY `b` (`bb`),
KEY `d` (`d`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1 `compression`='tokudb_zlib'
explain select bb from foo FORCE INDEX (b) where bb > 5;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE foo index b b 9 NULL 1 Using where; Using index
select bb from foo FORCE INDEX (b) where bb > 5;
bb
10
alter table foo change d dd varchar(10);
show create table foo;
Table Create Table
foo CREATE TABLE `foo` (
`aa` int(11) NOT NULL DEFAULT '0',
`bb` bigint(20) DEFAULT NULL,
`c` char(10) DEFAULT NULL,
`dd` varchar(10) DEFAULT NULL,
`e` text,
PRIMARY KEY (`aa`),
KEY `b` (`bb`),
KEY `d` (`dd`) `clustering`=yes
) ENGINE=TokuDB DEFAULT CHARSET=latin1 `compression`='tokudb_zlib'
explain select * from foo where dd > "d";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE foo index d d 13 NULL 1 Using where; Using index
select * from foo where dd > "d";
aa bb c dd e
1 10 cc dddd eeeee
drop table foo;
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