Topic: 创建index会加快sort吗? |
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1.创建index会加快sort吗? | Copy to clipboard |
Posted by: dissip Posted on: 2006-12-25 16:03 如: select * from table1 where ... order by col1 为col1创建index 会加快上述语句吗?(where 里没有col1) |
2.Re:创建index会加快sort吗? [Re: dissip] | Copy to clipboard |
Posted by: why Posted on: 2006-12-26 19:19 一般會 用個別database system的工具驗證一下吧 |
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