資料庫的查詢與儲存過程

範圍查詢：

是一張表，admin_id 主鍵id

//第一種top查詢
select top 10 * from dbo.administratorsinfo where admin_id not in(select top 10 admin_id from dbo.administratorsinfo)
//第二種max()查詢
select top 10 * from dbo.administratorsinfo where admin_id>(select max(admin_id) from dbo.administratorsinfo where admin_id in(select top 10 admin_id from dbo.administratorsinfo))
//第三種between  and查詢
select * from dbo.administratorsinfo where admin_id between 1 and 20
//第四種row_number()over()查詢
select * from (select *,row_number() over(order by admin_id)as number from dbo.administratorsinfo)t where t.number between 10 and 20

//aebs表名，declare 定義，set賦值，while（）begin end迴圈，exec儲存

//儲存過程：迴圈
create procedure aebs
as	declare @count int;
set @count=10;
while(@count>0)
begin
print @count;
set @count=@count-1
endexec  aebs
//儲存過程：分頁查詢
create proc [dbo].[pagelistproc] (@pageindex int,
@pagesize int,@tablename varchar(200),@columnname varchar(500),@orderby varchar(50),@sort varchar(50)
)asdeclare @sql nvarchar(2000);
set @sql='select  '+@columnname+'  from(select '+@columnname+' ,row_number()over(order by '+@orderby+' )as number from '+@tablename+' )t where t.number between '+cast(((@pageindex-1)*@pagesize)as varchar(200))+' and '+ cast((@pagesize*@pageindex) as varchar(200))
exec(@sql)
//呼叫
//在新建查詢中呼叫pagelistproc  引數（第幾頁，多少條記錄，表名，需查詢的字段，排序的字段，公升序/倒序，）
exec pagelistproc 1,5,'dbo.administratorsinfo','*','admin_id','desc'

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