tech user wrote:
Add an alias for the subquery
select * from ( select .... ) my_alias where dd >= 3;
Better, use a having clause and eliminate the subquery. Odds are it
will be more efficient in MySQL.
How to replace the original one with a having statement?
Thanks again.
select uin,count(*) as dd from active_users
where date >= date_add(curdate(),interval -30 day)
group by uin
having count(*) >=3;
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