SQL中join的用法解析(inner join、full out join、left join)

話很少說,先上個對於各類join狀況的總結圖: web 例若有以下關係的數據: svg 一、inner join3d select * from Table_a join Table_b on Table_a.id_a = Table_b.id_b 2.一、full outer join等於full joincode select * from Table_a full join Table_b
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