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select执行过程
(8)select (9) distinct <select list>
(1)from <left table>
(3) <join type> join <right table
(2) on<join condiction>
(4)where<>
(5)group by <>
(6)with {CUBE|ROLLUP}
(7)having <having list>
(10)order by<order by list>
(11)limit<limit list>
insert执行过程
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原文地址:http://www.cnblogs.com/stay-sober/p/4173719.html