MySql 各種join的使用方法

具體詳解如下 1 INNER JOIN(內連接)    SELECT * FORM TABLE_A  A  INNER JOIN TABLE_B B ON A.KEY = B.KEY 2 LEFT JOIN (左連接)   SELECT * FORM TABLE_A  A LEFT JOIN TABLE_B B ON A.KEY = B.KEY  3 RIGHT JOIN (右連接) SELECT

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