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多表分页存储

时间:2018-04-25 15:22:22      阅读:232      评论:0      收藏:0      [点我收藏+]

标签:order by   set   type   变量   class   output   for   roc   ret   

--存储过程
CREATE PROCEDURE Pager @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: USE [ApplicationForm] GO DECLARE @return_value int, @TotalCount int, @TotalPage int SELECT @TotalCount = 0 SELECT @TotalPage = 0 EXEC @return_value = [dbo].[Pager] @TotalCount = @TotalCount OUTPUT, @TotalPage = @TotalPage OUTPUT, @Table = N‘ Process AS S LEFT JOIN UserTable AS C ON C.ID = S.Level1 LEFT JOIN UserTable AS B ON B.ID = S.Level2 LEFT JOIN UserTable AS E ON E.ID = S.next ‘, @Column = N‘ C.Name ,B.Name as Name1,S.Level3 , E.Name as Name2,S.DocumentsID,S.Info,S.Note ,S.ID‘, @OrderColumn = N‘S.ID Desc‘, @GroupColumn = N‘S.ID‘, @PageSize = 10, @CurrentPage = 1, @Group = 0, @Condition = N‘( Level3 =3 or next = 4)‘ SELECT @TotalCount as N‘@TotalCount‘, @TotalPage as N‘@TotalPage‘ SELECT ‘Return Value‘ = @return_value GO **/
遇到的小问题:sql语句没有间隔保存,每个语句连接加上空格。多表连接出现相同表名,用别名,如
C.Name ,B.Name as Name1,S.Level3 , E.Name as Name2,S.DocumentsID,S.Info,S.Note ,S.ID


 

多表分页存储

标签:order by   set   type   变量   class   output   for   roc   ret   

原文地址:https://www.cnblogs.com/zchzt/p/8944795.html

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