所谓的潇洒

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分页查询写法性能比较

写法1:

with T as(select *, ROW_NUMBER() over(order by ID desc) nr
   from Table1 where 1=1 and CreateTime >='2020-02-28 09:00:19' and CreateTime <='2020-05-28 09:00:19')
select * from T where nr between ((2 - 1) * 20 + 1) and (2 * 20)

写法2:

with T as(SELECT * FROM (SELECT ID, ROW_NUMBER() over(order by ID desc) nr FROM Table1
 where 1=1 and CreateTime >='2020-02-28 09:00:19' and CreateTime <='2020-05-28 09:00:19') A
WHERE nr between ((2 - 1) * 20 + 1) and (2 * 20)) select V.* from T INNER JOIN Table1 V ON T.ID=V.ID

写法3:

SELECT * INTO #T FROM (SELECT ID, ROW_NUMBER() over(order by ID desc) nr FROM Table1 where 1=1  and CreateTime >='2020-02-28 09:00:19' and CreateTime <='2020-05-28 09:00:19') A
WHERE nr  between ((2 - 1) * 20 + 1) and (2 * 20) select V.* from #T INNER JOIN Table1 V ON #T.ID=V.ID

结论:

  在我工作中遇到的场景中,写法1用时6s,写法2用时2s,写法3用时不到1s

posted on 2020-05-28 09:31  所谓的潇洒  阅读(215)  评论(0编辑  收藏  举报