--创建Util库
CREATE DATABASE Util
GO

--创建通用的分页存储过程
USE Util
GO
/****** Object:  StoredProcedure [dbo].[UP_GeneralPagedQuery_v1]    Script Date: 04/03/2014 17:32:07 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-- Author:        DeanZhou
-- Create date: 2013-09-24
-- Description:    通用的分页存储过程（一）
CREATE PROCEDURE [dbo].[UP_GeneralPagedQuery_v1]
    @TableName VARCHAR(100) ,                    --表名称：如 MKT.dbo.UV_CouponInfo
    @WhereField NVARCHAR(1000) = ‘‘ ,            --筛选条件：如 Status = 1 AND CreateUser = ‘admin‘
    @SelectField NVARCHAR(1500) = ‘*‘ ,          --需要查询的列：如 *
    @OrderField NVARCHAR(1000) = ‘‘ ,            --需要进行排序的字段：如  CustomerName desc,StartDate asc,Status desc,id asc 
    @PageSize INT = 15 ,                         --页面大小：如 15
    @PageIndex INT = 1 ,                         --当前页面：如 1
    @TotalCount INT = 0 OUT                      --记录总数：输出值
AS 
    BEGIN   

        IF @OrderField IS NULL OR @OrderField = ‘‘ 
            BEGIN
                SET @OrderField = ‘ ID ‘
            END

        IF @WhereField IS NULL OR @WhereField = ‘‘ 
            BEGIN
                SET @WhereField = ‘ WHERE ID > 0 ‘
            END
        ELSE 
            BEGIN
                SET @WhereField = ‘ WHERE ‘ + @WhereField
            END
            
        DECLARE @ExceptCount INT = @PageSize * ( @PageIndex - 1 )
        DECLARE @TakeCount INT = @PageSize    
        DECLARE @IsNeedSubQuery INT
        
        DECLARE @SqlPreview NVARCHAR(MAX) = 
              ‘SELECT @C = COUNT(1) FROM ‘ + @TableName + ‘ ‘ + @WhereField + ‘;‘
            + ‘IF @EC < 0 SET @EC = 0 IF @EC >= @C SET @EC = @C;‘
            + ‘IF @TC < 0 SET @TC = 15 IF (@EC + @TC) > @C SET @TC = @C - @EC;‘
            + ‘IF @EC > 0 AND @TC > 0 SET @NSQ = 1 ELSE SET @NSQ = 0;‘
                                             
        EXEC sp_executesql @SqlPreview,
            N‘@C INT OUTPUT,@EC INT OUTPUT,@TC INT OUTPUT,@NSQ INT OUTPUT‘,
            @TotalCount OUTPUT, @ExceptCount OUTPUT, @TakeCount OUTPUT, @IsNeedSubQuery OUTPUT    
            
        DECLARE @MaxOrMin VARCHAR(3) = ‘MAX‘
        DECLARE @DescOrAsc VARCHAR(4) = ‘‘
        IF @ExceptCount > @TotalCount / 2 
            BEGIN
                SET @MaxOrMin = ‘MIN‘
                SET @DescOrAsc = ‘DESC‘
                SET @ExceptCount = @TotalCount - @ExceptCount + 1
            END

        DECLARE @SqlQuery NVARCHAR(MAX) = 
              ‘ DECLARE @T_IDS TABLE (ID INT) ‘
                + ‘ IF @NSQ = 1‘ + 
                    ‘ BEGIN ‘ + 
                    ‘    SELECT @MD = ‘ + @MaxOrMin + ‘(ID) FROM ‘+
                    ‘        (SELECT TOP ‘ + CONVERT(VARCHAR(15), @ExceptCount) + ‘ ID FROM ‘ + @TableName + ‘ ‘ + @WhereField + ‘ ORDER BY ‘ + @OrderField + ‘)T1;‘ + 
                    ‘    INSERT INTO @T_IDS ‘+
                    ‘         SELECT TOP ‘ + CONVERT(VARCHAR(15), @TakeCount) + ‘ ID FROM ‘ + @TableName + ‘ ‘ + @WhereField + ‘ AND ID > @MD  ORDER BY ‘ + @OrderField + 
                    ‘    SELECT ‘ + @SelectField + ‘ FROM ‘ + @TableName + ‘ S WHERE ID IN (SELECT ID FROM @T_IDS) ORDER BY ‘ + @OrderField + 
                    ‘ END ‘ + 
                  ‘ ELSE‘ + 
                    ‘ BEGIN ‘ + 
                    ‘    INSERT INTO @T_IDS SELECT ID FROM (SELECT TOP ‘ + CONVERT(VARCHAR(15), @TakeCount) + ‘ ID FROM ‘ + @TableName + ‘ ‘ + @WhereField + ‘ ORDER BY  ‘ + @OrderField + ‘)T;‘ + 
                    ‘    SELECT ‘ + @SelectField + ‘ FROM ‘ + @TableName + ‘ S WHERE ID IN (SELECT ID FROM @T_IDS) ORDER BY ‘ + @OrderField + 
                    ‘ END ‘
                                          
        EXEC sp_executesql @SqlQuery, N‘@MD INT,@NSQ INT‘, 0, @IsNeedSubQuery
        
    END   
    
    GO
    
--创建测试库
CREATE DATABASE Test
GO

--创建测试表
USE [Test]
CREATE TABLE TableTest (ID INT,NAME NVARCHAR(50),CreateDate DATETIME)
GO

--插入测试数据
INSERT INTO TableTest
SELECT 1,‘dean1‘,GETDATE() UNION
SELECT 2,‘dean2‘,GETDATE() UNION
SELECT 3,‘dean3‘,GETDATE() UNION
SELECT 4,‘dean4‘,GETDATE() 

DECLARE    @TotalCount int
EXEC Util.[dbo].[UP_GeneralPagedQuery_v1]
        @TableName = N‘Test.dbo.TableTest‘,
        @WhereField = N‘ID > 0 AND ID < 100‘,
        @SelectField = N‘ID,NAME,CreateDate‘,
        @OrderField = N‘NAME ASC,CreateDate DESC‘,
        @PageSize = 2,
        @PageIndex = 2,
        @TotalCount = @TotalCount OUTPUT

SELECT    @TotalCount as N‘@TotalCount‘