2022-01-22
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1834
mysql查询语句逻辑查询顺序(不加点干货不行呀!)
废话不多说🙅🏻♀️,直接上干货!

1、一个完整SQL查询语句的书写顺序
(8) SELECT (9)DISTINCT<Select_list> case when…end as [new column]...
(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) WITH {CUBE|ROLLUP}
(7) HAVING<having_condtion>
(10) ORDER BY<order_by_list>
(11) LIMIT<limit_number>
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