Recursive sum in parent-child hierarchy T-SQL
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | ---树形(父子关系类)分级类统计(父子统计) --涂聚文 2014-08-14 drop table BookKindList create table BookKindList ( BookKindID INT IDENTITY(1,1) PRIMARY KEY , BookKindName nvarchar(500) not null , BookKindParent int null ) GO drop table BookCostsPer --- CREATE TABLE BookCostsPer ( ID INT IDENTITY(1,1) PRIMARY KEY , NodeId INT NOT NULL , [BookName] nvarchar(500) NOT NULL , [CostsValue] DECIMAL (18,6) NOT NULL , CostDate datetime default (getdate()) ) go select * from BookKindList insert into BookKindList(BookKindName,BookKindParent) values ( '塗聚文书目录' , null ) insert into BookKindList(BookKindName,BookKindParent) values ( '文学' ,1) insert into BookKindList(BookKindName,BookKindParent) values ( '设计艺术' ,1) insert into BookKindList(BookKindName,BookKindParent) values ( '自然科学' ,1) insert into BookKindList(BookKindName,BookKindParent) values ( '小说' ,2) insert into BookKindList(BookKindName,BookKindParent) values ( '诗词散曲' ,2) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (3, '设计理论' ,450, '2014-01-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (4, '计算机科学' ,400, '2014-01-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (5, '傲慢與偏見' ,550, '2014-01-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (6, '宋词' ,150, '2014-01-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (3, '版式设计' ,150, '2013-05-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (4, 'C语言设计' ,200, '2013-05-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (5, '汤姆叔叔的小屋' ,530, '2013-05-02' ) insert into BookCostsPer(NodeId,[BookName],[CostsValue],CostDate) values (6, '唐诗' ,110, '2013-05-02' ) --视图 create view v_BookCostsPer as select *, year (CostDate) as 'YearName' from BookCostsPer go ---統計 WITH DirectReport (BookKindParent, BookKindID, [BookKindName], LEVEL , Struc) AS ( -- anchor SELECT a.BookKindParent, a.BookKindID, a.BookKindName, 0 AS LEVEL , cast ( ':' + cast (a.BookKindID AS varchar ) + ':' AS varchar (100)) AS Struc FROM BookKindList a WHERE a.BookKindParent IS NULL UNION ALL -- recursive SELECT a.BookKindParent, a.BookKindID, a.BookKindName, LEVEL +1, cast (d.Struc + cast (a.BookKindID AS varchar )+ ':' AS varchar (100)) AS Struc FROM BookKindList a JOIN DirectReport d ON d.BookKindID = a.BookKindParent ) SELECT d.BookKindParent, d.BookKindID, d.BookKindName, d. level , d.Struc, sum ( CASE WHEN d.Struc = SUBSTRING (dd.Struc, 1, len(d.Struc)) THEN c.CostsValue ELSE 0 END ) AS TotCost FROM DirectReport d,DirectReport dd JOIN BookCostsPer c ON c.NodeId = dd.BookKindID GROUP BY d.BookKindParent,d.BookKindID, d.BookKindName, d. level , d.Struc ORDER BY d.BookKindID GO -----按年各父子类合计 with DirectReport (BookKindParent, BookKindID, [BookKindName], Level , Struc, [YearName]) as ( -- anchor select a.BookKindParent, a.BookKindID, a.BookKindName, 0 as Level , cast ( ':' + cast (a.BookKindID as varchar ) + ':' as varchar (100)) as Struc, y.[YearName] from BookKindList a, YearNames y where a.BookKindParent is null union all -- recursive Select a.BookKindParent, a.BookKindID, a.BookKindName, Level +1, cast (d.Struc + cast (a.BookKindID as varchar )+ ':' as varchar (100)) as Struc, d.[YearName] from BookKindList a join DirectReport d on d.BookKindID = a.BookKindParent ) Select d.BookKindParent, d.[YearName], d.BookKindID, d.BookKindName, d. level , d.Struc, -- dd.Struc, sum ( case when d.Struc = SUBSTRING (dd.Struc, 1, len(d.Struc)) then c.CostsValue else 0 end ) as TotCost from DirectReport d left join DirectReport dd on d.[YearName] = dd.[YearName] join v_BookCostsPer c on c.[YearName] = dd.[YearName] and c.NodeId = dd.BookKindID group by d.BookKindParent, d.[YearName], d.BookKindID, d.BookKindName, d. level , d.Struc order by d.[YearName], d.BookKindID GO |
哲学管理(学)人生, 文学艺术生活, 自动(计算机学)物理(学)工作, 生物(学)化学逆境, 历史(学)测绘(学)时间, 经济(学)数学金钱(理财), 心理(学)医学情绪, 诗词美容情感, 美学建筑(学)家园, 解构建构(分析)整合学习, 智商情商(IQ、EQ)运筹(学)生存.---Geovin Du(涂聚文)
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】博客园社区专享云产品让利特惠,阿里云新客6.5折上折
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· DeepSeek 解答了困扰我五年的技术问题
· 为什么说在企业级应用开发中,后端往往是效率杀手?
· 用 C# 插值字符串处理器写一个 sscanf
· Java 中堆内存和栈内存上的数据分布和特点
· 开发中对象命名的一点思考
· 为什么说在企业级应用开发中,后端往往是效率杀手?
· DeepSeek 解答了困扰我五年的技术问题。时代确实变了!
· 本地部署DeepSeek后,没有好看的交互界面怎么行!
· 趁着过年的时候手搓了一个低代码框架
· 推荐一个DeepSeek 大模型的免费 API 项目!兼容OpenAI接口!
2012-08-14 Csharp run sql script create database