MySQL数据库3

8.1基本select语句 1.查询所有 select from aa_user; 2.查询指定列 select user_name,user_sex from aa_user; 3.基本条件查询【=or and】 select * from aa_user where user_id=6; select * from aa_user where user_id=11 or user_sex=fa

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