sql server 分页存储过程

Posted 2020-08-11 一步一个脚印

----------------------分页存储过程----------------------------------------------------------------------------------------------------

CREATE PROCEDURE [dbo].[Proc_Page]

@PageIndex int = 1,                    -- 当前页码

@PageSize int = 10,                    -- 每页记录条数(页面大小)

@Table nvarchar(2000),               -- 表名或视图名，甚至可以是嵌套SQL：(Select * From Tab Where ID>1000) Tab

@Field nvarchar(200) = ‘*‘,          -- 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 int output,                  -- 执行结果 -1 error, 0 false, maxpage true

@TotalRow int output,                  -- 记录总数 

@Descript varchar(100) output      -- 结果描述

AS

BEGIN

Set ROWCOUNT @PageSize;

Set @Descript = ‘‘;

Set @MaxPage = 0;

-------------------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((@PageIndex-1)*@PageSize AS nvarchar(8))+‘ ORDER BY ‘ + @OrderBy;

  PRINT @SQL;

  -- 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

GO