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一条sql 语句搞定数据库分页

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Release: 2016-06-07 17:47:28
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一条sql 语句搞定分页

select top 10 b.* from (select top 20 主键字段,排序字段 from 表名 order by 排序字段 desc) a,表名 b where b.主键字段 = a.主键字段 order by a.排序字段
具体实现:
关于数据库分页:
  declare @start int,@end int
  @sql  nvarchar(600)
  set @sql='select top'+str(@end-@start+1)+'+from t where rid not in(select top'+str(@str-1)+'rid from t where rid>-1)'
  exec sp_executesql @sql

注意:在top后不能直接跟一个变量,所以在实际应用中只有这样的进行特殊的处理。rid为一个标识列,如果top后还有具体的字段,这样做是非常有好处的。因为这样可以避免 top的字段如果是逻辑索引的,查询的结果后实际表中的不一致(逻辑索引中的数据有可能和数据表中的不一致,而查询时如果处在索引则首先查询索引)

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