USE [DB_Common]
GO
/****** 对象: StoredProcedure [dbo].[Com_Pagination]  脚本日期: 03/09/2012 23:46:20 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/************************************************************
 *
 *Sql分页存储过程（支持多表分页存储）
 *
 *调用实例：
 EXEC Com_Pagination 100, --总记录数
   0, --总页数
    -- 'Person',--查询的表名
   '
           Person p
           LEFT JOIN TE a
           ON a.PID=p.Id 
          ', --查询的表名（这里为多表）
   'a.*', --查询数据列
   'p.ID', --排列字段
   'p.ID', --分组字段
   2, --每页记录数
   1, --当前页数
   0, --是否使用分组，否是
   ' a.pid=2'--查询条件
 ************************************************************/
CREATE PROCEDURE [dbo].[Com_Pagination]
@TotalCount INT OUTPUT, --总记录数
@TotalPage INT OUTPUT, --总页数
@Table NVARCHAR(1000), --查询的表名（可多表，例如：Person p LEFT JOIN TE a ON a.PID=p.Id ）
@Column NVARCHAR(1000), --查询的字段，可多列或者为*
@OrderColumn NVARCHAR(100), --排序字段
@GroupColumn NVARCHAR(150), --分组字段
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页数
@Group TINYINT, --是否使用分组，否是
@Condition NVARCHAR(4000) --查询条件（注意：若这时候为多表查询，这里也可以跟条件，例如：a.pid=2）
AS
DECLARE @PageCount   INT, --总页数
    @strSql    NVARCHAR(4000), --主查询语句
    @strTemp    NVARCHAR(2000), --临时变量
    @strCount   NVARCHAR(1000), --统计语句
    @strOrderType NVARCHAR(1000) --排序语句
BEGIN
SET @PageCount = @PageSize * (@CurrentPage -1)
SET @strOrderType = ' ORDER BY ' + @OrderColumn + ' '
IF @Condition != ''
BEGIN
  IF @CurrentPage = 1
  BEGIN
    IF @GROUP = 1
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' WHERE ' + @Condition + ' GROUP BY ' + @GroupColumn
      SET @strCount = @strCount + ' SET @TotalCount=@@ROWCOUNT'
      SET @strSql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @Column 
        + ' FROM ' + @Table + ' WHERE ' + @Condition + 
        ' GROUP BY ' + @GroupColumn + ' ' + @strOrderType
    END
    ELSE
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' WHERE ' + @Condition
      SET @strSql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @Column 
        + ' FROM ' + @Table + ' WHERE ' + @Condition + ' ' + @strOrderType
    END
  END
  ELSE
  BEGIN
    IF @GROUP = 1
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' WHERE ' + @Condition + ' GROUP BY ' + @GroupColumn
      SET @strCount = @strCount + ' SET @TotalCount=@@ROWCOUNT'
      SET @strSql = 'SELECT * FROM (SELECT TOP (2000) ' + @Column 
        + ',ROW_NUMBER() OVER(' + @strOrderType + 
        ') AS NUM FROM ' + @Table + ' WHERE ' + @Condition + 
        ' GROUP BY ' + @GroupColumn + 
        ') AS T WHERE NUM BETWEEN ' + STR(@PageCount + 1) + 
        ' AND ' + STR(@PageCount + @PageSize)
    END
    ELSE
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' WHERE ' + @Condition
      SET @strSql = 'SELECT * FROM (SELECT TOP (2000) ' + @Column 
        + ',ROW_NUMBER() OVER(' + @strOrderType + 
        ') AS NUM FROM ' + @Table + ' WHERE ' + @Condition + 
        ') AS T WHERE NUM BETWEEN ' + STR(@PageCount + 1) + 
        ' AND ' + STR(@PageCount + @PageSize)
    END
  END
END
ELSE
  --没有查询条件
BEGIN
  IF @CurrentPage = 1
  BEGIN
    IF @GROUP = 1
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' GROUP BY ' + @GroupColumn
      SET @strCount = @strCount + 'SET @TotalCount=@@ROWCOUNT'
      SET @strSql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @Column 
        + ' FROM ' + @Table + ' GROUP BY ' + @GroupColumn + ' ' + 
        @strOrderType
    END
    ELSE
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
      SET @strSql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @Column 
        + ' FROM ' + @Table + ' ' + @strOrderType
    END
  END
  ELSE
  BEGIN
    IF @GROUP = 1
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
        + ' GROUP BY ' + @GroupColumn
      SET @strCount = @strCount + 'SET @TotalCount=@@ROWCOUNT'
      SET @strSql = 'SELECT * FROM (SELECT TOP (2000) ' + @Column 
        + ',ROW_NUMBER() OVER(' + @strOrderType + 
        ') AS NUM FROM ' + @Table + ' GROUP BY ' + @GroupColumn + 
        ') AS T WHERE NUM BETWEEN ' + STR(@PageCount + 1) + 
        ' AND ' + STR(@PageCount + @PageSize)
    END
    ELSE
    BEGIN
      SET @strCount = 'SELECT @TotalCount=COUNT(*) FROM ' + @Table
      SET @strSql = 'SELECT * FROM (SELECT TOP (2000) ' + @Column 
        + ',ROW_NUMBER() OVER(' + @strOrderType + 
        ') AS NUM FROM ' + @Table + ') AS T WHERE NUM BETWEEN ' + 
        STR(@PageCount + 1) + ' AND ' + STR(@PageCount + @PageSize)
    END
  END
END
EXEC sp_executesql @strCount,
   N'@TotalCount INT OUTPUT',
   @TotalCount OUTPUT
IF @TotalCount > 2000
BEGIN
  SET @TotalCount = 2000
END
IF @TotalCount%@PageSize = 0
BEGIN
  SET @TotalPage = @TotalCount / @PageSize
END
ELSE
BEGIN
  SET @TotalPage = @TotalCount / @PageSize + 1
END
SET NOCOUNT ON
EXEC (@strSql)
END
SET NOCOUNT OFF
/**调用实例：
EXEC Com_Pagination 100, --总记录数
   0, --总页数
    -- 'Person',--查询的表名
   '
           Person p
           LEFT JOIN TE a
           ON a.PID=p.Id 
          ', --查询的表名（这里为多表）
   'a.*', --查询数据列
   'p.ID', --排列字段
   'p.ID', --分组字段
   2, --每页记录数
   1, --当前页数
   0, --是否使用分组，否是
   ' a.pid=2'--查询条件
SELECT a.* 
FROM  Person p
    LEFT JOIN TE a
      ON a.PID = p.Id
WHERE a.pid = 2
**/