mariadb/mysql-test/t/alter_table_online.test

#
# Test of ALTER ONLINE TABLE syntax
#

--source include/have_innodb.inc
--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings
#
# Test of things that can be done online
#

create table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b'));
insert into t1 (a) values (1),(2),(3);

--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify b int default 5;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 change b new_name int;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify e enum('a','b','c');
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 comment "new comment";
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 rename to t2;

drop table t1;

#
# everything with temporary tables is "online", i.e. without locks
#
create temporary table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b'));
insert into t1 (a) values (1),(2),(3);

alter online table t1 modify b int default 5;
alter online table t1 change b new_name int;
alter online table t1 modify e enum('a','b','c');
alter online table t1 comment "new comment";
alter online table t1 rename to t2;

drop table t2;

#
# Test of things that is not possible to do online
#

create table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b'));
insert into t1 (a) values (1),(2),(3);

--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 drop column b, add b int;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify b bigint;
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify e enum('c','a','b');
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify c varchar(50);
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 modify c varchar(100);
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t1 add f int;
--error ER_ALTER_OPERATION_NOT_SUPPORTED_REASON
alter online table t1 engine=memory;

alter table t1 engine=innodb;
alter table t1 add index (b);
alter online table t1 add index c (c);
alter online table t1 drop index b;
drop table t1;

create temporary table t1 (a int not null primary key, b int, c varchar(80), e enum('a','b'));
insert into t1 (a) values (1),(2),(3);

#
# everything with temporary tables is "online", i.e. without locks
#
alter online table t1 drop column b, add b int;
alter online table t1 modify b bigint;
alter online table t1 modify e enum('c','a','b');
alter online table t1 modify c varchar(50);
alter online table t1 modify c varchar(100);
alter online table t1 add f int;
alter online table t1 engine=memory;

alter table t1 engine=innodb;
alter table t1 add index (b);
alter online table t1 add index c (c);
alter online table t1 drop index b;
drop table t1;

#
# Test merge tables
#
create table t1 (a int not null primary key, b int, c varchar(80));
create table t2 (a int not null primary key, b int, c varchar(80));
create table t3 (a int not null primary key, b int, c varchar(80)) engine=merge UNION=(t1);
--error ER_ALTER_OPERATION_NOT_SUPPORTED
alter online table t3 union=(t1,t2);
drop table t1,t2,t3;