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include/master-slave.inc
[connection master]
connection master;
create table t1(a int primary key);
insert into t1 values(1);
insert into t1 values(2);
insert into t1 values(3);
insert into t1 values(4);
connection slave;
select * from t1 order by a;
a
1
2
3
4
alter table t1 add column z1 int as(a+1) virtual, add column z2 int as (a+2) persistent;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
connection master;
insert into t1 values(5);
insert into t1 values(6);
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#UPDATE query
connection master;
update t1 set a = a+10;
select * from t1 order by a;
a
11
12
13
14
15
16
connection slave;
select * from t1 order by a;
a z1 z2
11 12 13
12 13 14
13 14 15
14 15 16
15 16 17
16 17 18
connection master;
update t1 set a = a-10;
select * from t1 order by a;
a
1
2
3
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#DELETE quert
connection master;
delete from t1 where a > 2 and a < 4;
select * from t1 order by a;
a
1
2
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
4 5 6
5 6 7
6 7 8
#REPLACE query
connection master;
replace into t1 values(1);
replace into t1 values(3);
replace into t1 values(1);
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#SELECT query
connection master;
select * from t1 where a > 2 and a < 4;
a
3
connection slave;
select * from t1 where a > 2 and a < 4;
a z1 z2
3 4 5
#UPDATE with SELECT query
connection master;
update t1 set a = a + 10 where a > 2 and a < 4;
select * from t1 order by a;
a
1
2
4
5
6
13
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
4 5 6
5 6 7
6 7 8
13 14 15
connection master;
update t1 set a = a - 10 where a = 13;
select * from t1 order by a;
a
1
2
3
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#Break Unique Constraint
alter table t1 add column z4 int as (a % 6) persistent unique;
connection master;
#entering duplicate value for slave persistent column
insert into t1 values(7);
select * from t1 order by a;
a
1
2
3
4
5
6
7
connection slave;
include/wait_for_slave_sql_error.inc [errno=1062]
select * from t1 order by a;
a z1 z2 z4
1 2 3 1
2 3 4 2
3 4 5 3
4 5 6 4
5 6 7 5
6 7 8 0
alter table t1 drop column z4;
start slave;
include/wait_for_slave_sql_to_start.inc
connection master;
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
7 8 9
connection master;
select * from t1 order by a;
a
1
2
3
4
5
6
7
drop table t1;
include/rpl_end.inc
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