[英]SQL Variable in XML Node
I have the following code: 我有以下代码:
DECLARE @x TABLE (item XML (document Galeries))
DECLARE @schemaname VARCHAR(100)
SET @schemaname = 'GaleriesSchem2'
INSERT into @x
SELECT '
<GaleriesSchem2>
<Image_1 OriginalName="Image">4814111.jpg</Image_1>
<Image_2 OriginalName="Image2">481411.jpg</Image_2>
</GaleriesSchem2>'
SELECT rref.value('.', 'varchar(MAX)') AS 'Value'
FROM @x
CROSS APPLY
item.nodes('//GaleriesSchem2/node()') AS Results(rref)
result: 结果:
1 | 1 | 4814111.jpg
4814111.jpg
2 | 2 | 481411.jpg
481411.jpg
But I want to change the root element dynamically, for example: 但是我想动态更改根元素,例如:
item.nodes('//[local-name()=sql:variable("@schemaname")]/node()') AS Results(rref)
But this code doesn't work. 但是此代码不起作用。
Use asterisk instead of double slash 使用星号而不是双斜杠
DECLARE @x TABLE(item XML)
DECLARE @schemaname VARCHAR(100)
SET @schemaname = 'GaleriesSchem3'
INSERT into @x
SELECT '
<GaleriesSchem2>
<Image_1 OriginalName="Image">4814111.jpg</Image_1>
<Image_2 OriginalName="Image2">481411.jpg</Image_2>
</GaleriesSchem2>
<GaleriesSchem3>
<Image_1 OriginalName="Image">4814111_3.jpg</Image_1>
<Image_2 OriginalName="Image2">481411_3.jpg</Image_2>
</GaleriesSchem3>
'
SELECT rref.value('.', 'varchar(MAX)') AS 'Value'
FROM @x
CROSS APPLY
item.nodes('*[local-name()=sql:variable("@schemaname")]/node()') AS Results(rref)
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