摘要: 简单函数CASE [col_name] WHEN [value1] THEN [result1]…ELSE [default] END new_col_name -- 枚举 select t_name, case t_name when '张三' then '严肃' when '李四' then ' 阅读全文
posted @ 2020-08-04 09:03 littlebob 阅读(450) 评论(0) 推荐(0) 编辑