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drop table if exists t1, t2, t3;
create table t1 (a int, b int as (a % 10));
create table t2 (a int, b int as (a % 10));
insert into t1 values (1,default);
insert into t2 values (2,default);
create table t3 (a int, b int as (a % 10)) engine=MERGE UNION=(t1,t2);
ERROR HY000: MRG_MYISAM storage engine does not support computed columns
drop table t1,t2;
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