sqlserver查詢用時的sql

背景：

在日常工作中，要進行查詢sql 爲了提高效率和時間

create database DBTest
use DBTest

--創建測試表
create table pagetest
(
id int identity(1,1) not null,
col01 int null,
col02 nvarchar(50) null,
col03 datetime null
)

--1萬記錄集
declare @i int
set @i=0
while(@i<10000)
begin
    insert into pagetest select cast(floor(rand()*10000) as int),left(newid(),10),getdate()
    set @i=@i+1
end 

--寫法1，not in/top
select top 50 * from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan]
where id not in (
	select top 78600 id from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan] order by id
	)
order by id
--耗時110毫秒




--寫法2，not exists
select top 50 * from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan] pagetest
where not exists 
(
	select 1 from 
		(select top 786000 id from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan] order by id)a  
	where a.id=pagetest.id
)
order by id
--耗時：453毫秒




--寫法3，max/top
select top 50 * from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan]
where id>(
	select max(id) from (select top 786000 id from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan] order by id)a
		)
order by id
--耗時：313毫秒





--寫法4，row_number()
select top 50 * from 
(
	select row_number()over(order by id)rownumber,* from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan]
)a
where rownumber>786000
--耗時：546毫秒



select * from 
(select row_number()over(order by id)rownumber,* from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan])a
where rownumber>786000 and rownumber<786051
--耗時：530毫秒




select * from 
(select row_number()over(order by id)rownumber,* from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan])a
where rownumber between 786000 and 786051
--耗時：500毫秒




--寫法5，在csdn上一帖子看到的，row_number() 變體，不基於已有字段產生記錄序號，先按條件篩選以及排好序，再在結果集上給一常量列用於產生記錄序號
select *
from (
    select row_number()over(order by tempColumn)rownumber,*
    from (select top 786051 tempColumn=0,* from [CRB_TPM].[dbo].[BO_DW_AttVisitPlan] where 1=1 order by id)a
)b
where rownumber>786000

耗時：300毫秒