MS SQL 分页存储过程

最近换了家新公司，但是新公司没有使用分页的存储过程。那我就自个写一个往项目上套 （效率怎么样就不怎么清楚没有详细的测试过）

CREATE PROCEDURE [dbo].[pro_common_pageList](@tab NVARCHAR(MAX) ,---表名@PrimaryKey VARCHAR(100) , --主键ID@strFld NVARCHAR(MAX) , --字段字符串@strWhere NVARCHAR(MAX) = ' ' , --where条件 @IsDistinct BIT ,@PageIndex INT , --页码@PageSize INT , --每页容纳的记录数@Order VARCHAR(255) = ' ' , --排序字段及规则,不用加order by@Sort VARCHAR(20) = 'desc' ,@TotalCount INT OUTPUT  --总记录数
    )
ASBEGINSET NOCOUNT ON;DECLARE @strSql VARCHAR(MAX);IF @strFld IS NULLOR @strFld = ' 'BEGIN SET @strFld = '*';END;  IF @Order IS NULLOR @Order = ' 'BEGIN SET @Order = @PrimaryKey;END; 
--计算总记录数DECLARE @sqlRecordCount NVARCHAR(MAX); --得到总记录条数的语句DECLARE @recordCount INT; --保存总记录条数的变量DECLARE @distinct NVARCHAR(20)= ' ';IF @IsDistinct = 1BEGIN SET @distinct = ' DISTINCT ';END; SET @sqlRecordCount = N'SELECT @recordCount=COUNT(1) FROM (SELECT '+ @distinct + ' ' + @strFld + ' FROM ' + @tab + ' WHERE 1=1 '+ @strWhere + ' ) AS TEMPTABLE';EXEC sp_executesql @sqlRecordCount, N'@recordCount int output',@recordCount OUTPUT;SET @TotalCount = @recordCount;--数据查询
--当@PageIndex=1，使用TOP效率较快IF @PageIndex = 1BEGIN SET @strSql = 'SELECT ' + @distinct + ' TOP ' + STR(@PageSize)+ ' ' + @strFld + ',0 AS rownum FROM ' + @tab+ ' WHERE 1=1 ' + @strWhere + ' ORDER BY ' + @Order + ' '+ @Sort;END; ELSEBEGIN  SET @strSql = 'SELECT * FROM (SELECT *, ROW_NUMBER() OVER(ORDER BY ' + @PrimaryKey+ ') AS rownum FROM ';
--是否去重：1去重IF @IsDistinct = 1BEGIN SET @strSql = @strSql + ' (SELECT DISTINCT ' + @strFld+ ' FROM ' + @tab + ' WHERE 1=1 ' + @strWhere+ ' ) AS S ';END;ELSEBEGIN SET @strSql = @strSql + ' ' + @tab + ' WHERE 1=1 '+ @strWhere;END; SET @strSql = @strSql+ ') AS Dwhere WHERE Dwhere.rownum BETWEEN '+ CAST(( ( @PageIndex - 1 ) * @PageSize ) + 1 AS NVARCHAR(20));SET @strSql = @strSql + ' AND '+ CAST(( @PageIndex * @PageSize ) AS NVARCHAR(20));SET @strSql = @strSql + ' ORDER BY ' + @Order + ' ' + @Sort;END; PRINT(@strSql)EXEC (@strSql);SET NOCOUNT OFF;END;