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1、升序排列
create index ix_table1 on table1 (column1,column2);
select column1,column2 from table1 order by column1,column2;
2、降序排列
create index ix_table1 on table1 (column1 desc,column2);
select column1,column2 from table1 order by column1 desc,column2;
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原文地址：http://www.cnblogs.com/nizuimeiabc1/p/5230361.html
