案例一
select id, case id when '6' then 'six' when '7' then 'seven' when '8' then 'eight' else 'other' end as id_type from formtable_main_122 where id = 7
案例一
select id, case id when '6' then 'six' when '7' then 'seven' when '8' then 'eight' else 'other' end as id_type from formtable_main_122 where id = 7