分页SQL语句

CREATE PROC [dbo].[Procpageselect] @table     NVARCHAR(max),-- 输入参数，表名
                                   @columns   NVARCHAR(max),-- 输入参数，要返回的列
                                   @rows      INT,-- 输入参数，每页显示的数据量
                                   @page      INT,-- 输入参数，当前页面
                                   @orderBy   NVARCHAR(max),-- 输入参数，数据按什么字段排序，后面加上desc表示倒序
                                   @condition NVARCHAR(max),-- 输入参数，sql形式的筛选查询条件
                                   @total     INT output -- 输出参数，满足上诉查询条件的数据总数
AS
  BEGIN
      DECLARE @start INT -- 变量，获取的当页数据的起始位置
      DECLARE @end INT -- 变量，获取的当页数据的结束位置
      DECLARE @sql NVARCHAR(max) -- 变量，保存动态生成的sql语句
 
      IF @condition = ''
          OR @condition IS NULL
        BEGIN
            SET @condition = '1=1'
        END
 
      SET @sql = 'select @count = COUNT(*) from ' + @table
                 + ' where ' + @condition
 
      EXEC Sp_executesql
        @sql,
        N'@count int output',
        @total output
 
      --print(@total)
      SET @start = @rows * ( @page - 1 )
      SET @end = @rows * @page
      SET @sql = 'with tmp as (select ROW_NUMBER() over(order by '
                 + @orderBy + ') as [no], ' + @columns
                 + ' from (select * from ' + @table + ' where '
                 + @condition
                 + ') as a) select * from tmp where [no] > '
                 + Ltrim(Str(@start)) + ' and [no] <= '
                 + Ltrim(Str(@end))
 
      --print(@sql)
      EXEC(@sql)
  END