Error Code: 1052. Column 'id' in IN/ALL/ANY subquery is ambiguous

Question

    Left join ( select * from crif_stage2 where id in 
    ( select id from  ( select user_id, max(id) as id from
    crif_stage2 group by 1)a)) cf2 on l.user_id = cf2.user_id

Edit: exactly where should I add table name (a) in this query?

Answer 1

Left join ( select * from crif_stage2 where id in ( select a.id from
( select user_id, max(id) as id from crif_stage2 group by 1) a ) ) cf2 on l.user_id = cf2.user_id