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                RIGHT JOIN 關鍵字從右表(table2)返回所有的行,即使左表(table1)中沒有匹配。如果左表中沒有匹配,則結果為 NULL。 ### SQL RIGHT JOIN 語法 SELECT*column\_name(s)* FROM*table1* RIGHT JOIN*table2* ON*table1.column\_name*\=*table2.column\_name*; 或: SELECT*column\_name(s)* FROM*table1* RIGHT OUTER JOIN*table2* ON*table1.column\_name*\=*table2.column\_name*; **注釋:**在某些數據庫中,RIGHT JOIN 稱為 RIGHT OUTER JOIN。 ![SQL RIGHT JOIN](https://www.runoob.com/wp-content/uploads/2013/09/img_rightjoin.gif)
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