mysql操做查詢結果case when then else end用法舉例

Case具備兩種格式。簡單Case函數和Case搜索函數。  –簡單Case函數  CASE sex           WHEN ‘1’ THEN ‘男’           WHEN ‘2’ THEN ‘女’  ELSE ‘其餘’ END  –Case搜索函數  CASE WHEN sex = ‘1’ THEN ‘男’           WHEN sex = ‘2’ THEN ‘女’  EL

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