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
**/