SQLSERVER Pager store procedure分页存储过程

CREATE PROCEDURE [dbo].[Pagination]
@Page int = 1, — 当前页码
@PageSize int = 10, — 每页记录条数(页面大小)
@Table nvarchar(500), — 表名或视图名，甚至可以是嵌套SQL：(Select * From Tab Where ID>1000) Tab
@Field nvarchar(800) = ‘*’, — 返回记录集字段名，”,”隔开，默认是”*”
@OrderBy nvarchar(100) = ‘ID ASC’, — 排序规则
@Filter nvarchar(500), — 过滤条件
@MaxPage smallint output, — 执行结果 -1 error, 0 false, maxpage true
@TotalRow int output, — 记录总数 /* 2007-07-12 22:11:00 update */
@Descript varchar(100) output — 结果描述
AS
BEGIN

— =============================================
— Author: Jimmy.Yu
— Create date: 2007-5-11
— Description: SQL 2005 以上版本 通用分页存储过程
— =============================================

Set ROWCOUNT @PageSize;

Set @Descript = ‘successful’;
——————-参数检测—————-
IF LEN(RTRIM(LTRIM(@Table))) !> 0
Begin
Set @MaxPage = 0;
Set @Descript = ‘table name is empty’;
Return;
End

IF LEN(RTRIM(LTRIM(@OrderBy))) !> 0
Begin
Set @MaxPage = 0;
Set @Descript = ‘order is empty’;
Return;
End

IF ISNULL(@PageSize,0) <= 0
Begin
Set @MaxPage = 0;
Set @Descript = ‘page size error’;
Return;
End

IF ISNULL(@Page,0) <= 0
Begin
Set @MaxPage = 0;
Set @Descript = ‘page error’;
Return;
End
——————-检测结束—————-

Begin Try
— 整合SQL
Declare @SQL nvarchar(4000), @Portion nvarchar(4000);

Set @Portion = ‘ ROW_NUMBER() OVER (ORDER BY ‘ + @OrderBy + ‘) AS ROWNUM FROM ‘ + @Table;

Set @Portion = @Portion + (CASE WHEN LEN(@Filter) >= 1 THEN (‘ Where ‘ + @Filter + ‘) AS tab’) ELSE (‘) AS tab’) END);

Set @SQL = ‘Select TOP(‘ + CAST(@PageSize AS nvarchar(8)) + ‘) ‘ + @Field + ‘ FROM (Select ‘ + @Field + ‘,’ + @Portion;

Set @SQL = @SQL + ‘ Where tab.ROWNUM > ‘ + CAST((@Page-1)*@PageSize AS nvarchar(8));

— 执行SQL, 取当前页记录集
Execute(@SQL);
——————————————————————–

— 整合SQL
Set @SQL = ‘Set @Rows = (Select MAX(ROWNUM) FROM (Select’ + @Portion + ‘)’;

— 执行SQL, 取最大页码
Execute sp_executesql @SQL, N’@Rows int output’, @TotalRow output;
Set @MaxPage = (CASE WHEN (@TotalRow % @PageSize)<>0 THEN (@TotalRow / @PageSize + 1) ELSE (@TotalRow / @PageSize) END);
End Try
Begin Catch
— 捕捉错误
Set @MaxPage = -1;
Set @Descript = ‘error line: ‘ + CAST(ERROR_LINE() AS varchar(8)) + ‘, error number: ‘ + CAST(ERROR_NUMBER() AS varchar(8)) + ‘, error message: ‘ + ERROR_MESSAGE();
Return;
End Catch;

— 执行成功
Return;
END