摘要：
delete from active where title not in(select top 3 * from active ) 阅读全文
posted @ 2015-03-31 08:02
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摘要：
select top 3 * from active 阅读全文
posted @ 2015-03-31 08:01
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摘要：
select count (*) from active 阅读全文
posted @ 2015-03-31 08:00
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