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  • MYSQL基础链接查询(内连接查询,外连接查询)

    『1』内连接查询

      employee表

      

      department表

      

      select num,e.d_id,name,age,sex,homeaddr,d.d_name,d.function,d.address

            from employee e,department d

                where e.d_id=d.d_id;

      

    『2』外连接查询

        @左连接(Left Join)查询

        数据表与上面同步

        SELECT num,e.d_id,name,age,sex,homeaddr,d.d_name,d.function,d.address

           FROM employee e left join department d

              ON e.d_id=d.d_id;

      

      @右连接(Right Join)查询

      数据表与上面同步

        SELECT num,e.d_id,name,age,sex,homeaddr,d.d_name,d.function,d.address

           FROM employee e right join department d

              ON e.d_id=d.d_id;

      

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  • 原文地址:https://www.cnblogs.com/DeepBlues/p/2994610.html
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