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create table t1 (a int, b smallint) engine=innodb;
connect con1,localhost,root,,test;
alter table t1 add constraint check (b < 8);
alter table t1 modify column b int, algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
connection default;
alter table t1 add primary key (a);
drop table t1;
disconnect con1;
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