我有一个包含5个表的数据库。连接3个表。
我创建了一个表，其中所有数据都已合并。此表有一个GroupLevel列，其中包含level nr。每个级别保持随后的较低级别，例如第1组持有第2组。
我的第一张表包含产品：
ProductID ProductLanguageID ProductDefaultShopID ProductNumber ProductName ProductPrice
100101@@SHOP1 LANG2 SHOP1 100101 AAA 159,61
100102@@SHOP1 LANG2 SHOP1 100102 BBB 159,61
100105@@SHOP1 LANG2 SHOP1 100105 CCC 159,61
第二个有小组：
GroupID GroupLanguageID GroupName GroupNumber
1@@SHOP1 LANG2 ABC 1
1.01@@SHOP1 LANG2 BCD 1.01
1.02@@SHOP1 LANG2 CDE 1.02
1.03@@SHOP1 LANG2 DEF 1.03
第三语言
LanguageID LanguageCode2 LanguageName LanguageNativeName
LANG1 En English English
LANG2 De German Deutsch
我还有2个表与另一个表没有任何连接：
集团关系表
GroupRelationsGroupID GroupRelationsParentID
1.01@@SHOP1 1@@SHOP1
1.02@@SHOP1 1@@SHOP1
1.02@@SHOP1 1@@SHOP1
集团产品关系表
GroupProductRelationGroupID GroupProductRelationProductID
1.01@@SHOP1 576134@@SHOP1
1.01@@SHOP1 327112@@SHOP1
1.01@@SHOP1 457168@@SHOP1
1.01@@SHOP1 457220@@SHOP1
1.03@@SHOP1 457221@@SHOP1
1.03@@SHOP1 163704@@SHOP1
1.03@@SHOP1 163705@@SHOP1
1.03@@SHOP1 163706@@SHOP1
我创建了一个表，其中所有数据都已合并。此表有一个GroupLevel列，它包含一个级别nr。每个级别保持随后的较低级别，例如第1组持有第2组，如下表所示
GroupLevel GroupID GroupLanguageID GroupName GroupNumber ParentGroupID GroupProductRelationGroupID GroupProductRelationProductID ProductID ProductLanguageID ProductNumber ProductName ProductPrice
1 1@@SHOP1 LANG2 ABC 1 NULL NULL NULL NULL NULL NULL NULL NULL
2 1.01@@SHOP1 LANG2 BCD 1.01 1@@SHOP1 1.01@@SHOP1 457163@@SHOP1 457163@@SHOP1 LANG2 457163 ProductName 299,81
2 1.01@@SHOP1 LANG2 BCD 1.01 1@@SHOP1 1.01@@SHOP1 457162@@SHOP1 457162@@SHOP1 LANG2 457162 ProductName 163,14
2 1.03@@SHOP1 LANG2 DEF 1.03 1@@SHOP1 1.03@@SHOP1 159151@@SHOP1 159151@@SHOP1 LANG2 159151 ProductName 10
2 1.03@@SHOP1 LANG2 DEF 1.03 1@@SHOP1 1.03@@SHOP1 159150@@SHOP1 159150@@SHOP1 LANG2 159150 ProductName 10
2 1.03@@SHOP1 LANG2 DEF 1.02 1@@SHOP1 1.03@@SHOP1 159122@@SHOP1 159122@@SHOP1 LANG2 159122 ProductName 309,35
3 1.13@@SHOP1 LANG2 GGG 1.13 1.03@@SHOP1 1.13@@SHOP1 3459652@@SHOP1 3459652@@SHOP1LANG2 3459652 ProductName 309,35
4 1.14@@SHOP1 LANG2 BBB 1.14 1.13@@SHOP1 1.13@@SHOP1 564326@@SHOP1 564326@@SHOP1 LANG2 564326 ProductName 309,35
我的问题是如何创建一个最多3个级别的动态XML文件，其中第三个级别之后的所有项目都合并到（包括在）第3级别。我还需要这些级别中的每个项目（合并到第三个级别）都有一个属性，表示/显示它们最初属于哪个级别。因此，例如，如果我有5个级别，4级和5级合并到级别3，则级别4中的所有项目都应该有一个标记“先前在4级”和5级“之前在5级”。无论有多少级别，这都应该有效。
我创建了代码，但它根本不能正常工作
SELECT lvl1.GroupName AS groupName, lvl1.GroupNumber
,(
SELECT prod1.ProductName AS itemName
,prod1.ProductNumber AS itemNumber,
prod1.ProductPrice AS itemPrice,
prod1.GroupID,
prod1.GroupName
FROM #tmpFullResult AS prod1
WHERE prod1.GroupLevel=1
AND prod1.GroupID=lvl1.GroupID
FOR XML PATH('product'),ROOT('products'),TYPE
)
,(
SELECT lvl2.GroupName AS groupName, lvl2.GroupNumber
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber
,prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=2
AND prod.ProductID=lvl2.ProductID
AND prod.GroupID=lvl2.GroupID
FOR XML PATH('product'),ROOT('products'),TYPE
)
FROM #tmpFullResult AS lvl2
WHERE lvl2.GroupLevel=2
AND lvl2.ParentGroupID=lvl1.GroupID
group by lvl2.GroupName , lvl2.GroupNumber,lvl2.GroupID, lvl2.ProductID
FOR XML PATH('productGroup2'),TYPE
)
FROM #tmpFullResult AS lvl1
WHERE lvl1.ParentGroupID IS NULL
group by lvl1.GroupName , lvl1.GroupNumber,lvl1.GroupID, lvl1.ProductID
FOR XML PATH('productgroup1'),ROOT('root')
GO
我需要做的一个例子：
select '<?xml version="1.0" encoding="ISO-8859-1" ?>' +
(
SELECT lvl1.GroupName AS groupName
,(
SELECT prod1.ProductName, prod1.ProductNumber AS itemNumber
,prod1.ProductPrice AS itemPrice
FROM tmpFullResultInDesign AS prod1
WHERE prod1.ProductID IS NOT NULL
AND prod1.GroupLevel=1
AND prod1.ProductID=lvl1.ProductID
AND prod1.GroupID=lvl1.GroupID
FOR XML PATH('productLevel_1'),ROOT('products'),TYPE
)
,(
SELECT lvl2.GroupName AS 'GroupName'
,(
SELECT prod2.ProductName AS ProductName ,prod2.ProductNumber AS itemNumber
,prod2.ProductPrice AS itemPrice, prod2.GroupID
FROM tmpFullResultInDesign AS prod2
WHERE prod2.ProductID IS NOT NULL
AND prod2.GroupLevel=2
AND prod2.ProductID=lvl2.ProductID
AND prod2.GroupID=lvl2.GroupID
order by groupName
FOR XML PATH('productLevel_2'),ROOT('products'),TYPE
)
,(
SELECT lvl3.GroupName AS groupName
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber
,prod.ProductPrice AS itemPrice
FROM tmpFullResultInDesign AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=3
AND prod.ProductID= lvl3.ProductID
AND prod.GroupID=lvl3.GroupID
FOR XML PATH('productLevel_3'),ROOT('products'),TYPE
)
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber
,prod.ProductPrice AS itemPrice
FROM tmpFullResultInDesign AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=3
FOR XML PATH('productLevel_previously_level_4'),ROOT('products'),TYPE
)
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber
,prod.ProductPrice AS itemPrice
FROM tmpFullResultInDesign AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=5
FOR XML PATH('productLevel_previously_level_5'),ROOT('products'),TYPE
)
FROM tmpFullResultInDesign AS lvl3
WHERE lvl3.GroupLevel=3
AND lvl3.ParentGroupID=lvl2.GroupID
FOR XML PATH('productGroup3'),TYPE, ELEMENTS
)
FROM tmpFullResultInDesign AS lvl2
WHERE lvl2.GroupLevel=2
AND lvl2.ParentGroupID=lvl1.GroupID
order by lvl2.GroupName
FOR XML PATH('productGroup2'),TYPE, ELEMENTS
)
FROM tmpFullResultInDesign AS lvl1
WHERE lvl1.ParentGroupID IS NULL
order by GroupNumber
FOR XML PATH('productGroup1'),ROOT('root')
)
XML输出就像这个例子：
<?xml version="1.0" encoding="UTF-8"?>
<root>
<productGroup1>
<groupName>Kosmetik</groupName>
<productGroup2>
<GroupName>Face</GroupName>
<products>
<productLevel_2 id="Product1">
<ProductName>AAAAA!</ProductName>
<itemNumber>457162</itemNumber>
<itemPrice>1.02</itemPrice>
<GroupID>1.01@@SHOP1</GroupID>
</productLevel_2>
<productLevel_2 id="Product2">
<ProductName>BBBBB!</ProductName>
<itemNumber>43434234</itemNumber>
<itemPrice>134.3434</itemPrice>
<GroupID>1.01@@SHOP1</GroupID>
</productLevel_2>
</products>
<productGroup3>
<groupName>FFFFFFF</groupName>
<products>
<productLevel_3 id="Product1">
<itemNumber>123@1</itemNumber>
<itemPrice>1.230000000000000e+002</itemPrice>
</productLevel_3>
</products>
<products>
<productLevel_previously_level_4 id="Product1">
<itemNumber>23234545</itemNumber>
<itemPrice>34.676</itemPrice>
</productLevel_previously_level_4>
<productLevel_previously_level_4 id="Product2">
<itemNumber>23234545</itemNumber>
<itemPrice>34.676</itemPrice>
</productLevel_previously_level_4>
</products>
</productGroup3>
</productGroup2>
</productGroup1>
</root>
问题解释： 我需要使用n级（即级别n + 1应该达到级别n）。我试着再次解释...... 我有几个级别的产品：
level 1 + products
level 2 + products
level 3 + products ...
level n + products.
我的想法是，如果我选择1级，所有级别大于1的产品（即2,3,4 ... n）都会聚合到1级：
<productGroup1 GroupID="10@@SHOP1">
<GroupName>AAA</GroupName>
<GroupLevel>1</GroupLevel>
<products>
<product>
<ProductName>CCC</ProductName>
</product>
</products>
<products>
<product>
<ProductName>Mem</ProductName>
</product>
</products>
</productGroup1>
如果我选择级别2，级别1是完整的，并且级别大于2（即3,4 ... n）的所有产品都会聚合到级别2。 所有级别都是如此（没有限制）。
我可以将CTE放入存储过程吗？
答案 0 :(得分：1)
我已经采用了“我需要做的一个例子”并用这个替换了4级和5级查询：
-- Levels 3+
SELECT prod.ProductName AS '@id', prod.GroupLevel AS '@PreviousGroupLevel', prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel>= 3
--FOR XML PATH('productLevel_previously_level_4'),ROOT('products'),TYPE
FOR XML PATH('productLevel_HigherLevels'),ROOT('products'),TYPE
在上面，请注意，我正在使用属性“@PreviousGroupLevel”，并且XML PATH已更改为“productLevel_HigherLevels”。
整体查询如下（它需要#tmpFullResult表）：
SELECT lvl1.GroupName AS groupName,
(
SELECT prod1.ProductName, prod1.ProductNumber AS itemNumber
,prod1.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod1
WHERE prod1.ProductID IS NOT NULL
AND prod1.GroupLevel = 1
AND prod1.ProductID = lvl1.ProductID
AND prod1.GroupID = lvl1.GroupID
FOR XML PATH('productLevel_1'),ROOT('products'),TYPE
),
(
SELECT lvl2.GroupName AS 'GroupName',
(
SELECT prod2.ProductName AS ProductName ,prod2.ProductNumber AS itemNumber,
prod2.ProductPrice AS itemPrice, prod2.GroupID
FROM #tmpFullResult AS prod2
WHERE prod2.ProductID IS NOT NULL
AND prod2.GroupLevel=2
AND prod2.ProductID=lvl2.ProductID
AND prod2.GroupID=lvl2.GroupID
ORDER BY groupName
FOR XML PATH('productLevel_2'),ROOT('products'),TYPE
),
(
SELECT lvl3.GroupName AS groupName
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel = 3
AND prod.ProductID = lvl3.ProductID
AND prod.GroupID = lvl3.GroupID
FOR XML PATH('productLevel_3'),ROOT('products'),TYPE
)
,(
-- Levels 3+
SELECT prod.ProductName AS '@id', prod.GroupLevel AS '@PreviousGroupLevel', prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel>= 3
--FOR XML PATH('productLevel_previously_level_4'),ROOT('products'),TYPE
FOR XML PATH('productLevel_HigherLevels'),ROOT('products'),TYPE
)/*,
(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=5
FOR XML PATH('productLevel_previously_level_5'),ROOT('products'),TYPE
)*/
FROM #tmpFullResult AS lvl3
WHERE lvl3.GroupLevel=3
AND lvl3.ParentGroupID=lvl2.GroupID
FOR XML PATH('productGroup3'),TYPE, ELEMENTS
)
FROM #tmpFullResult AS lvl2
WHERE lvl2.GroupLevel=2
AND lvl2.ParentGroupID=lvl1.GroupID
order by lvl2.GroupName
FOR XML PATH('productGroup2'),TYPE, ELEMENTS
)
FROM #tmpFullResult AS lvl1
WHERE lvl1.ParentGroupID IS NULL
order by GroupNumber
FOR XML PATH('productGroup1'),ROOT('root')
我希望这是你一直在寻找的。
<强>更新 样本数据：
CREATE TABLE #tmpFullResult( GroupLevel INT, GroupID VARCHAR( 20 ) NULL,
GroupLanguageID VARCHAR( 20 ) NULL, GroupName VARCHAR( 20 ) NULL,
GroupNumber DECIMAL( 10, 3 ) NULL, ParentGroupID VARCHAR( 20 ) NULL,
GroupProductRelationGroupID VARCHAR( 20 ) NULL,
GroupProductRelationProductID VARCHAR( 20 ) NULL,
ProductID VARCHAR( 20 ) NULL, ProductLanguageID VARCHAR( 10 ) NULL,
ProductNumber INT NULL, ProductName VARCHAR( 20 ) NULL, ProductPrice DECIMAL( 20, 4 ) NULL )
INSERT INTO #tmpFullResult
VALUES
( 1, '1@@SHOP1', 'LANG2', 'ABC', 1, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL ),
( 2, '1.01@@SHOP1', 'LANG2', 'BCD', 1.01, '1@@SHOP1', '1.01@@SHOP1', '457163@@SHOP1', '457163@@SHOP1', 'LANG2', 457163, 'ProductName', 299.81 ),
( 2, '1.01@@SHOP1', 'LANG2', 'BCD', 1.01, '1@@SHOP1', '1.01@@SHOP1', '457162@@SHOP1', '457162@@SHOP1', 'LANG2', 457162, 'ProductName', 163.14 ),
( 2, '1.03@@SHOP1', 'LANG2', 'DEF', 1.03, '1@@SHOP1', '1.03@@SHOP1', '159151@@SHOP1', '159151@@SHOP1', 'LANG2', 159151, 'ProductName', 10 ),
( 2, '1.03@@SHOP1', 'LANG2', 'DEF', 1.03, '1@@SHOP1', '1.03@@SHOP1', '159150@@SHOP1', '159150@@SHOP1', 'LANG2', 159150, 'ProductName', 10 ),
( 2, '1.03@@SHOP1', 'LANG2', 'DEF', 1.02, '1@@SHOP1', '1.03@@SHOP1', '159122@@SHOP1', '159122@@SHOP1', 'LANG2', 159122, 'ProductName', 309.35 ),
( 3, '1.13@@SHOP1', 'LANG2', 'GGG', 1.13, '1.03@@SHOP1', '1.03@@SHOP1', '3459652@@SHOP1','3459652@@SHOP1','LANG2', 3459652, 'ProductName', 309.35 ),
( 4, '1.14@@SHOP1', 'LANG2', 'BBB', 1.14, '1.13@@SHOP1', '1.13@@SHOP1', '564326@@SHOP1', '564326@@SHOP1', 'LANG2', 564326, 'ProductName', 309.35 ),
( 5, '1.15@@SHOP1', 'LANG2', 'BBB', 1.14, '1.14@@SHOP1', '1.13@@SHOP1', '564326@@SHOP1', '564326@@SHOP1', 'LANG2', 564326, 'ProductName', 309.35 ),
( 3, '1.23@@SHOP1', 'LANG2', 'GGG', 1.13, '1.01@@SHOP1', '1.03@@SHOP1', '3459652@@SHOP1','3459652@@SHOP1','LANG2', 3459652, 'ProductName', 309.35 ),
( 4, '1.24@@SHOP1', 'LANG2', 'BBB', 1.14, '1.23@@SHOP1', '1.13@@SHOP1', '564326@@SHOP1', '564326@@SHOP1', 'LANG2', 564326, 'ProductName', 309.35 ),
( 5, '1.25@@SHOP1', 'LANG2', 'BBB', 1.14, '1.24@@SHOP1', '1.13@@SHOP1', '564326@@SHOP1', '564326@@SHOP1', 'LANG2', 564326, 'ProductName', 309.35 )
下面的查询类似于上面的查询，除了我添加了一个CTE来计算所有更高级别组的GroupLevel 3 parentID：
;WITH productLevel_HigherLevels( GroupLevel, GroupID, GroupLanguageID, GroupName, GroupNumber, ParentGroupID,
GroupProductRelationGroupID, GroupProductRelationProductID, ProductID, ProductLanguageID,
ProductNumber, ProductName, ProductPrice )
AS
-- Define the CTE query.
(
SELECT GroupLevel, GroupID, GroupLanguageID, GroupName, GroupNumber, ParentGroupID,
GroupProductRelationGroupID, GroupProductRelationProductID, ProductID, ProductLanguageID,
ProductNumber, ProductName, ProductPrice
FROM #tmpFullResult
WHERE GroupLevel = 4 AND ProductID IS NOT NULL
UNION ALL
SELECT HigherLevel.GroupLevel, HigherLevel.GroupID, HigherLevel.GroupLanguageID, HigherLevel.GroupName, HigherLevel.GroupNumber, LowerLevel.ParentGroupID,
HigherLevel.GroupProductRelationGroupID, HigherLevel.GroupProductRelationProductID, HigherLevel.ProductID, HigherLevel.ProductLanguageID,
HigherLevel.ProductNumber, HigherLevel.ProductName, HigherLevel.ProductPrice
FROM productLevel_HigherLevels AS LowerLevel
INNER JOIN #tmpFullResult AS HigherLevel
ON HigherLevel.ProductID IS NOT NULL
AND LowerLevel.GroupLevel + 1 = HigherLevel.GroupLevel
AND HigherLevel.ParentGroupID = LowerLevel.GroupID
)
SELECT lvl1.GroupName AS groupName,
(
SELECT prod1.ProductName, prod1.ProductNumber AS itemNumber
,prod1.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod1
WHERE prod1.ProductID IS NOT NULL
AND prod1.GroupLevel = 1
AND prod1.ProductID = lvl1.ProductID
AND prod1.GroupID = lvl1.GroupID
FOR XML PATH('productLevel_1'),ROOT('products'),TYPE
),
(
SELECT lvl2.GroupName AS 'GroupName',
(
SELECT prod2.ProductName AS ProductName ,prod2.ProductNumber AS itemNumber,
prod2.ProductPrice AS itemPrice, prod2.GroupID
FROM #tmpFullResult AS prod2
WHERE prod2.ProductID IS NOT NULL
AND prod2.GroupLevel=2
AND prod2.ProductID=lvl2.ProductID
AND prod2.GroupID=lvl2.GroupID
ORDER BY groupName
FOR XML PATH('productLevel_2'),ROOT('products'),TYPE
),
(
SELECT lvl3.GroupName AS groupName
,(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel = 3
AND prod.ProductID = lvl3.ProductID
AND prod.GroupID = lvl3.GroupID
FOR XML PATH('productLevel_3'),ROOT('products'),TYPE
)
,(
SELECT prod.ProductName AS '@id', prod.GroupLevel AS '@PreviousGroupLevel', prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM productLevel_HigherLevels AS prod
WHERE prod.ParentGroupID = lvl3.GroupID
--FOR XML PATH('productLevel_previously_level_4'),ROOT('products'),TYPE
FOR XML PATH('productLevel_HigherLevels'),ROOT('products'),TYPE
)/*,
(
SELECT prod.ProductName AS '@id' ,prod.ProductNumber AS itemNumber,
prod.ProductPrice AS itemPrice
FROM #tmpFullResult AS prod
WHERE prod.ProductID IS NOT NULL
AND prod.GroupLevel=5
FOR XML PATH('productLevel_previously_level_5'),ROOT('products'),TYPE
)*/
FROM #tmpFullResult AS lvl3
WHERE lvl3.GroupLevel=3
AND lvl3.ParentGroupID=lvl2.GroupID
FOR XML PATH('productGroup3'),TYPE, ELEMENTS
)
FROM #tmpFullResult AS lvl2
WHERE lvl2.GroupLevel=2
AND lvl2.ParentGroupID=lvl1.GroupID
order by lvl2.GroupName
FOR XML PATH('productGroup2'),TYPE, ELEMENTS
)
FROM #tmpFullResult AS lvl1
WHERE lvl1.ParentGroupID IS NULL
order by GroupNumber
FOR XML PATH('productGroup1'),ROOT('root')