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分页功能存储过程
ALTER PROCEDURE [dbo].[P_SplitPagesQuery] @TablesName NVARCHAR(MAX),--表名或视图名(只能传单一表名) @PK NVARCHAR(MAX)=‘‘,--主键(可以为空!) @StrSort NVARCHAR(MAX)=‘‘,--排序字段(按照这个字段对查询结果进行排序),不能为空 @SortType INT =0,--排序方式,默认为0(升序),1为降序 @StrWhere NVARCHAR(MAX)=‘‘,--查询条件(即sql语句中的where后面部分) @Fields NVARCHAR(MAX)=‘*‘,--读取字段(呈现出来的字段) @PageCurrent INT =1,--当前页码,默认为1 @PageSize INT =10,--页面大小,默认为10 @PageCount INT OUTPUT,--总页数(按照页面大小一共分了多少页) @RecordCount INT OUTPUT--查询结果的总条数 AS /* 返回值说明:查询结果(表) */ DECLARE @SqlStr nvarchar(4000) IF @StrWhere IS NOT NULL AND @StrWhere != ‘‘ BEGIN SET @StrWhere = ‘ WHERE ‘ + @StrWhere + ‘ ‘ END ELSE BEGIN SET @StrWhere = ‘‘ END BEGIN IF @StrSort = ‘‘ IF @PK IS NOT NULL AND @PK!=‘‘ SET @StrSort = @PK IF @PageCurrent < 1 SET @PageCurrent = 1 IF @SortType = 1 AND @StrSort!=‘‘ SET @StrSort = @StrSort + ‘ DESC ‘ IF @SortType = 0 AND @StrSort!=‘‘ SET @StrSort = @StrSort + ‘ ASC ‘ IF @PageCurrent = 1 --第一页提高性能 BEGIN SET @SqlStr = ‘SELECT TOP ‘ + str(@PageSize) +‘ ‘+@Fields+ ‘ FROM ‘ + @TablesName + ‘ AS tb ‘ + @StrWhere IF @StrSort!=‘‘ SET @SqlStr = @SqlStr + ‘ ORDER BY ‘+ @StrSort END ELSE BEGIN DECLARE @StartPos NVARCHAR(50) DECLARE @EndPos NVARCHAR(50) SET @StartPos = CONVERT(NVARCHAR(50),(@PageCurrent - 1) * @PageSize + 1) SET @EndPos = CONVERT(NVARCHAR(50),@PageCurrent * @PageSize) SET @SqlStr = ‘ SELECT ‘+@Fields+ ‘ FROM (SELECT ROW_NUMBER() OVER(ORDER BY ‘+@StrSort+‘) AS RowNum , tb.* ‘+‘ FROM ‘+@TablesName+‘ AS tb ‘+@StrWhere+‘) AS D WHERE RowNum BETWEEN ‘+@StartPos+‘ AND ‘ +@EndPos IF @StrSort!=‘‘ SET @SqlStr = @SqlStr + ‘ ORDER BY ‘+ @StrSort END END print @SqlStr EXEC(@SqlStr) DECLARE @SqlCount NVARCHAR(4000) SET @SqlCount = ‘SELECT @RecordCount=COUNT(*),@PageCount=CEILING((COUNT(*)+0.0)/‘ + CAST(@PageSize AS VARCHAR)+‘) FROM ‘ + @TablesName + @StrWhere --输出参数赋值 EXEC SP_EXECUTESQL @SqlCount,N‘@RecordCount INT OUTPUT,@PageCount INT OUTPUT‘, @RecordCount OUTPUT,@PageCount OUTPUT
调用示例
EXEC @x =[dbo].[P_SplitPagesQuery] ‘表或视图‘,‘‘,@sOrderBy,@nOrderTpye,@sSqlString,‘*‘, @nPageNum,@nPageSize,@PageCount OUTPUT,@RecordCount OUTPUT
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原文地址:http://www.cnblogs.com/yuzhihui/p/5465882.html