#select *,if(sex=1,"男","女") as sex3 from t_user
#SELECT *,(CASE sex WHEN 1 THEN '男' WHEN 2 THEN '女' ELSE '未知' END) as sex111 from t_user
#select *,if(sex=1,"男","女") as sex3 from t_user
#SELECT *,(CASE sex WHEN 1 THEN '男' WHEN 2 THEN '女' ELSE '未知' END) as sex111 from t_user
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