标签：应用 efault each 搜索 code and rac select 简单函数
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 ‘凶狠‘ when ‘王五‘ then ‘和蔼‘ end t_character from `teacher`
搜索函数CASE WHEN [expr] THEN [result1]…ELSE [default] END new_col_name
-- 搜索判断 select *, case when s_score < 60 then ‘不及格‘ when s_score >= 60 and s_score < 80 then ‘中等‘ when s_score >= 80 then ‘优秀‘ end score_type from `score`
标签：应用 efault each 搜索 code and rac select 简单函数
原文地址：https://www.cnblogs.com/littlebob/p/13431257.html
