问题描述
我使用 Sparx EA 构建关系数据库 (MS sql Server)。
该工具具有创建图表的功能。
我使用查询:
SELECT system.Name AS Series,systemElement.Name AS GroupName
FROM t_object systemElement
INNER JOIN t_object system ON system.Object_ID = systemElement.ParentID
INNER JOIN t_object organization ON organization.ParentID = systemElement.Object_ID
INNER JOIN t_object post ON post.ParentID = organization.Object_ID AND post.Stereotype = 'ActualPost'
WHERE system.Name = 'Name of my main system object'
得到
这很好,只是因为图表没有考虑到 ActualPosts 的多样性。
我可以访问多重性
SELECT system.Name AS Series,systemElement.Name AS GroupName,post.Name AS 'ActualPost',post.Multiplicity AS 'Multiplicity'
FROM t_object systemElement
INNER JOIN t_object system ON system.Object_ID = systemElement.ParentID
INNER JOIN t_object organization ON organization.ParentID = systemElement.Object_ID
INNER JOIN t_object post ON post.ParentID = organization.Object_ID AND post.Stereotype = 'ActualPost'
WHERE system.Name = 'Name of my main system object'
产生如下表格:
Series | GroupName | ActualPost | Multiplicity
Name of my main system element | OperationalPerformer A | Post AA | 1
Name of my main system element | OperationalPerformer A | Post AB | 1
Name of my main system element | OperationalPerformer A | Post AC | 2
Name of my main system element | OperationalPerformer B | Post BA | 1
Name of my main system element | OperationalPerformer B | Post BB | 1
Name of my main system element | OperationalPerformer C | Post CA | 3
Name of my main system element | OperationalPerformer C | Post CB | 2
Name of my main system element | OperationalPerformer C | Post CC | 5
我的想法是将多重性添加为行,因此像这样翻转表格:
Series | GroupName | ActualPost| Multiplicity
Name of my main system element | OperationalPerformer A | Post AA | 1
Name of my main system element | OperationalPerformer A | Post AB | 1
Name of my main system element | OperationalPerformer A | Post AC | 2
进入
Series | GroupName
Name of my main system element | OperationalPerformer A
Name of my main system element | OperationalPerformer A
Name of my main system element | OperationalPerformer A
Name of my main system element | OperationalPerformer A
虽然我不知道该怎么做。
有什么想法吗?
谢谢!
更新:
似乎 Sparx EA 在 sql 查询方面有一些限制...... 查询必须以 select 开头,请参阅 WITH clause within EA Sparx query
是否有针对所提供答案的解决方法?
解决方法
如果 Multiplicity <= 2047
WITH myTable as (
SELECT system.Name AS Series,systemElement.Name AS GroupName,post.Name AS 'ActualPost',post.Multiplicity AS 'Multiplicity'
FROM t_object systemElement
JOIN t_object system
ON system.Object_ID = systemElement.ParentID
JOIN t_object organization
ON organization.ParentID = systemElement.Object_ID
JOIN t_object post
ON post.ParentID = organization.Object_ID AND post.Stereotype = 'ActualPost'
WHERE system.Name = 'Name of my main system object'
)
SELECT
Series,GroupName
FROM
myTable m
JOIN master.dbo.spt_values v on m.Multiplicity > v.number
WHERE
Type = 'P'
将 CTE
修改为 Derived Table
检查一下
SELECT
Series,GroupName
FROM (
SELECT system.Name AS Series,post.Multiplicity AS 'Multiplicity'
FROM t_object systemElement
JOIN t_object system
ON system.Object_ID = systemElement.ParentID
JOIN t_object organization
ON organization.ParentID = systemElement.Object_ID
JOIN t_object post
ON post.ParentID = organization.Object_ID AND post.Stereotype = 'ActualPost'
WHERE system.Name = 'Name of my main system object'
) DT
JOIN MASTER.dbo.spt_values v on DT.Multiplicity > v.number
WHERE
Type = 'P'
,
;WITH T1 AS (
SELECT
system.Name AS Series,post.Multiplicity AS 'Multiplicity',1 as Cnt
FROM t_object systemElement
INNER JOIN t_object system ON system.Object_ID = systemElement.ParentID
INNER JOIN t_object organization ON organization.ParentID = systemElement.Object_ID
INNER JOIN t_object post ON post.ParentID = organization.Object_ID AND post.Stereotype = 'ActualPost'
WHERE system.Name = 'Name of my main system object'
UNION ALL
SELECT
Series,GroupName,Multiplicity,Cnt + 1 AS Cnt
FROM T1
WHERE Cnt < Multiplicity
)
SELECT
Series,GroupName
FROM T1
OPTION (MAXRECURSION 0) -- set recursion limit to undefined