本文共 230 字,大约阅读时间需要 1 分钟。
create temporary table test (id int); truncate table test ; insert into test select 1 from ( select (case (select count(1) num from actual_day_shop_sale ) when 0 then 1 end) can_insert ) as aa where can_insert=1 select * from test转载地址:http://olfmi.baihongyu.com/