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The author:(作者)归海一刀
published in(发表于) 2014/2/3 6:46:48
理解SQL的select语句执行顺序_[SQL Server教程]

理解SQL的select语句执行顺序_[SQL Server教程]
select语句执行顺序


(7)SELECT (8)DISTINCT (10)<TOP_specification> <select_list>
(1)FROM <left_table>
(3)　<join_type> JOIN <right_table>
(2)　　　 ON <join_condition>
(4)WHERE <where_condition>
(5)GROUP BY <group_by_list>
(6)HAVING <having_condition>
(9)ORDER BY <order_by_list>


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