drop table if exists t1, t2, t3;
create table t1 (
c1 int primary key,
c2 int
) DEFAULT CHARSET=utf8mb4
COLLATE=utf8mb4_unicode_ci
COMMENT = 'engine "innodb"';
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c1` int(11) NOT NULL,
  `c2` int(11) DEFAULT NULL,
  PRIMARY KEY (`c1`)
) ENGINE=Mroonga DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='engine "innodb"'
insert into t1 values (1, 100);
insert into t1 values (2, 101);
insert into t1 values (3, 102);
select * from t1;
c1	c2
1	100
2	101
3	102
update t1 set c2=c2+100 where c1=1;
select * from t1;
c1	c2
1	200
2	101
3	102
update t1 set c2=c2+100 where c1=2;
select * from t1;
c1	c2
1	200
2	201
3	102
update t1 set c2=c2+100 where c1=3;
select * from t1;
c1	c2
1	200
2	201
3	202
drop table t1;
