1SET @@session.default_storage_engine = 'archive'; 2create table t1 (a int, b int as (a+1)); 3ERROR HY000: ARCHIVE storage engine does not support generated columns 4create table t1 (a int not null); 5alter table t1 add column b int as (a+1); 6ERROR HY000: ARCHIVE storage engine does not support generated columns 7drop table t1; 8