我有一个MS SQL 2005数据库，其中报告表包含 XMLReport 列，其XML结构与此类似：
<my:CART_Marine>
<my:Area_Summary_Details>
<my:Areas>
<my:Area_Group>
<my:Area_Number>1</my:Area_Number>
<my:Paint_Application>
<my:Paint_Applications>
<my:Paint_Application_Group>
<my:Coat_Number>1</my:Coat_Number>
<my:Base_Batches>
<my:Base_Batch_Group>
<my:Base_Batch_No>1234567</my:Base_Batch_No>
<my:Base_Batch_No>5455443</my:Base_Batch_No>
<my:Base_Batch_No>8677667</my:Base_Batch_No>
<my:Base_Batch_No>3455445</my:Base_Batch_No>
</my:Base_Batch_Group>
</my:Base_Batches>
</my:Paint_Application_Group>
<my:Paint_Application_Group>
<my:Coat_Number>2</my:Coat_Number>
<my:Base_Batches>
<my:Base_Batch_Group>
<my:Base_Batch_No>9744566</my:Base_Batch_No>
<my:Base_Batch_No>8755632</my:Base_Batch_No>
</my:Base_Batch_Group>
</my:Base_Batches>
</my:Paint_Application_Group>
<my:Paint_Application_Group>
<my:Coat_Number>3</my:Coat_Number>
<my:Base_Batches>
<my:Base_Batch_Group>
<my:Base_Batch_No>5456783</my:Base_Batch_No>
</my:Base_Batch_Group>
</my:Base_Batches>
</my:Paint_Application_Group>
</my:Paint_Applications>
</my:Paint_Application>
</my:Area_Group>
<my:Area_Group>
<my:Area_Number>2</my:Area_Number>
<my:Paint_Application>
<my:Paint_Applications>
<my:Paint_Application_Group>
<my:Coat_Number>1</my:Coat_Number>
<my:Base_Batches>
<my:Base_Batch_Group>
<my:Base_Batch_No>2312311</my:Base_Batch_No>
<my:Base_Batch_No>2352244</my:Base_Batch_No>
<my:Base_Batch_No>8746773</my:Base_Batch_No>
<my:Base_Batch_No>7363634</my:Base_Batch_No>
</my:Base_Batch_Group>
</my:Base_Batches>
</my:Paint_Application_Group>
</my:Paint_Applications>
</my:Paint_Application>
</my:Area_Group>
<my:Area_Group>
<my:Area_Number>3</my:Area_Number>
<my:Paint_Application>
<my:Paint_Applications>
<my:Paint_Application_Group>
<my:Coat_Number>1</my:Coat_Number>
<my:Base_Batches>
<my:Base_Batch_Group>
<my:Base_Batch_No>1523552</my:Base_Batch_No>
<my:Base_Batch_No>6164633</my:Base_Batch_No>
</my:Base_Batch_Group>
</my:Base_Batches>
</my:Paint_Application_Group>
</my:Paint_Applications>
</my:Paint_Application>
</my:Area_Group>
</my:Areas>
</my:Area_Summary_Details>
</my:CART_Marine>
论坛 Area_Group ， Paint_Application_Group 和 Base_Batch_Group 是可重复的
我想要实现的是一个包含列的表：
Area_Number | Coat_Number |的 Base_Batch_No
其中 Coat_Number 仅来自指定的 Area_Number ， Base_Batch_No 仅来自指定的 Coat_Number 。
基于上面的例子，它应该创建如下：
**Area_Number** |**Coat_Number** |**Base_Batch_Number**
1 |1 |1234567
1 |1 |5455443
1 |1 |8677667
1 |1 |3455445
1 |2 |9744566
1 |2 |8755632
1 |3 |5456783
2 |1 |2312311
2 |1 |2352244
2 |1 |8746773
2 |1 |7363634
3 |1 |1523552
3 |1 |6164633
我尝试了很多方法，但我完成了这样的事情：
select distinct
r.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Area_Number)[1]','nvarchar(12)') AS Area_Number,
s.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Paint_Application/my:Paint_Applications/my:Paint_Application_Group/my:Coat_Number)[1]','nvarchar(12)') AS Coat_Number,
t.XmlReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Paint_Application/my:Paint_Applications/my:Paint_Application_Group/my:Base_Batches/my:Base_Batch_Group/my:Base_Batch_No)[1]','nvarchar(12)') AS Base_Batch_Number
from Report
cross apply Report.XMLReport.nodes('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(/my:CART_Marine/my:Area_Summary_Details/my:Areas/my:Area_Group)') AS s(XMLReport)
cross apply Report.XMLReport.nodes('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(/my:CART_Marine/my:Area_Summary_Details/my:Areas/my:Area_Group)') AS r(XMLReport)
cross apply Report.XMLReport.nodes('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(/my:CART_Marine/my:Area_Summary_Details/my:Areas/my:Area_Group)') AS t(XMLReport)
where
r.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Area_Number)[1]','nvarchar(12)')= s.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Area_Number)[1]','nvarchar(12)')
AND
s.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Paint_Application/my:Paint_Applications/my:Paint_Application_Group/my:Coat_Number)[1]','nvarchar(12)')= t.XMLReport.value('declare namespace my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-02T08:49:16";(my:Paint_Application/my:Paint_Applications/my:Paint_Application_Group/my:Coat_Number)[1]','nvarchar(12)')
这是生成一个如下表格（我从脑海中创建了这个表，所以它不能显示所有行，但你会发现这个想法）
**Area_Number** |**Coat_Number** |**Base_Batch_Number**
1 |1 |1234567
1 |1 |5455443
1 |1 |8677667
1 |1 |3455445
2 |1 |2312311
3 |1 |1523552
因此，只包含第一个 Coat_Number ，并且仅包含第一个 Coat_Number 中的第一个 Base_Batch_Number 。
我无法弄清楚此查询如何迭代 Paint_Application_Group 和 Base_Batch_Group 组的所有实例。
请帮忙，我现在已经连续3天了......
Krzysztof Deneka
答案 0 :(得分：0)
为了简单起见，我删除了名称空间，但这里的想法是：
DECLARE @report XML = N'
<CART_Marine>
<Area_Summary_Details>
<Areas>
<Area_Group>
<Area_Number>1</Area_Number>
<Paint_Application>
<Paint_Applications>
<Paint_Application_Group>
<Coat_Number>1</Coat_Number>
<Base_Batches>
<Base_Batch_Group>
<Base_Batch_No>1234567</Base_Batch_No>
<Base_Batch_No>5455443</Base_Batch_No>
<Base_Batch_No>8677667</Base_Batch_No>
<Base_Batch_No>3455445</Base_Batch_No>
</Base_Batch_Group>
</Base_Batches>
</Paint_Application_Group>
<Paint_Application_Group>
<Coat_Number>2</Coat_Number>
<Base_Batches>
<Base_Batch_Group>
<Base_Batch_No>9744566</Base_Batch_No>
<Base_Batch_No>8755632</Base_Batch_No>
</Base_Batch_Group>
</Base_Batches>
</Paint_Application_Group>
<Paint_Application_Group>
<Coat_Number>3</Coat_Number>
<Base_Batches>
<Base_Batch_Group>
<Base_Batch_No>5456783</Base_Batch_No>
</Base_Batch_Group>
</Base_Batches>
</Paint_Application_Group>
</Paint_Applications>
</Paint_Application>
</Area_Group>
<Area_Group>
<Area_Number>2</Area_Number>
<Paint_Application>
<Paint_Applications>
<Paint_Application_Group>
<Coat_Number>1</Coat_Number>
<Base_Batches>
<Base_Batch_Group>
<Base_Batch_No>2312311</Base_Batch_No>
<Base_Batch_No>2352244</Base_Batch_No>
<Base_Batch_No>8746773</Base_Batch_No>
<Base_Batch_No>7363634</Base_Batch_No>
</Base_Batch_Group>
</Base_Batches>
</Paint_Application_Group>
</Paint_Applications>
</Paint_Application>
</Area_Group>
<Area_Group>
<Area_Number>3</Area_Number>
<Paint_Application>
<Paint_Applications>
<Paint_Application_Group>
<Coat_Number>1</Coat_Number>
<Base_Batches>
<Base_Batch_Group>
<Base_Batch_No>1523552</Base_Batch_No>
<Base_Batch_No>6164633</Base_Batch_No>
</Base_Batch_Group>
</Base_Batches>
</Paint_Application_Group>
</Paint_Applications>
</Paint_Application>
</Area_Group>
</Areas>
</Area_Summary_Details>
</CART_Marine>'
SELECT batch.value('../../../../../../Area_Number[1]', 'INTEGER'),
batch.value('../../../Coat_Number[1]', 'INTEGER'),
batch.value('.', 'INTEGER')
FROM @report.nodes('//Base_Batch_No') r(batch)