Sql server 使用交叉应用进行查询,尝试基于属性值获取字段
我尝试根据属性(区域性)的值,从SQL Server中存储为XML的表单中获取所有字段名。实际上,我可以得到文本值,但它们被连接到FieldName列中 XML结构如下所示:Sql server 使用交叉应用进行查询,尝试基于属性值获取字段,sql-server,xml,sql-server-2012,xml-attribute,Sql Server,Xml,Sql Server 2012,Xml Attribute,我尝试根据属性(区域性)的值,从SQL Server中存储为XML的表单中获取所有字段名。实际上,我可以得到文本值,但它们被连接到FieldName列中 XML结构如下所示: <Form> <Field> <Field Name="email" Type="text" ColumnSize="6"> <Localizations> <Localization Culture="fr">
<Form>
<Field>
<Field Name="email" Type="text" ColumnSize="6">
<Localizations>
<Localization Culture="fr">
<Text>Adresse couriel</Text>
<Placeholder>Entrez votre adresse courriel</Placeholder>
</Localization>
<Localization Culture="fr">
<Text>Email</Text>
<Placeholder>Enter your email</Placeholder>
</Localization>
</Localizations>
</Field>
</Fields>
</Form>
结果如下所示:
FieldUniqueName | FieldName | FieldType
name | Nom Name | text
email | Adresse couriel Email | text
phone | Téléphone Phone Number| text
两种语言都在FieldName列中强>
我也尝试过:
...
c.value('data(./Localizations/Localization/Text)[1]', 'VARCHAR(100)') AS FieldName,
...
但是我需要在
[1]
或[2]
之间进行选择以获得正确的语言…好的,我找到了对我的问题的答案!我没有使用where子句,而是更改了字段名的XPath。工作起来很有魅力:
DECLARE @language VARCHAR(2)
SET @language = 'en'
SELECT
c.query('data(@Name)') AS FieldUniqueName,
c.query('data(./Localizations/Localization[@Culture=sql:variable("@language")]/Text)') AS FieldName,
c.query('data(@Type)') AS FieldType
FROM dbo.Form Form CROSS APPLY FormContent.nodes('/Form/Fields/Field') x(c)
WHERE Id = @formId
除此之外,您提供的XML(结构和“fr”都有)中还存在一些错误,您可以尝试以下方法:
DECLARE @tbl TABLE(ID INT IDENTITY, FormContent XML);
INSERT INTO @tbl VALUES
(N'<Form>
<Fields>
<Field Name="email" Type="text" ColumnSize="6">
<Localizations>
<Localization Culture="fr">
<Text>Adresse couriel</Text>
<Placeholder>Entrez votre adresse courriel</Placeholder>
</Localization>
<Localization Culture="en">
<Text>Email</Text>
<Placeholder>Enter your email</Placeholder>
</Localization>
</Localizations>
</Field>
</Fields>
</Form>');
前一个WHERE子句将只检查这个条件是否已满——在XML中的某个地方。嗯,是。。。但是在这里使用
data()
是不对的。。。最好将该条件打包到第二个.nodes()
调用中,作为XQuery谓词
我将尝试一下,如果它满足我的要求,请标记您的答案。谢谢
DECLARE @tbl TABLE(ID INT IDENTITY, FormContent XML);
INSERT INTO @tbl VALUES
(N'<Form>
<Fields>
<Field Name="email" Type="text" ColumnSize="6">
<Localizations>
<Localization Culture="fr">
<Text>Adresse couriel</Text>
<Placeholder>Entrez votre adresse courriel</Placeholder>
</Localization>
<Localization Culture="en">
<Text>Email</Text>
<Placeholder>Enter your email</Placeholder>
</Localization>
</Localizations>
</Field>
</Fields>
</Form>');
DECLARE @language VARCHAR(2)
SET @language = 'en'
SELECT
fld.value(N'@Name',N'nvarchar(max)') AS FieldUniqueName,
fld.value(N'@Type',N'nvarchar(max)') AS FieldType,
loc.value(N'(Text/text())[1]','nvarchar(max)') AS LocalText,
loc.value(N'(Placeholder/text())[1]','nvarchar(max)') AS LocalPlaceholder
FROM @tbl Form
CROSS APPLY FormContent.nodes(N'/Form/Fields/Field') AS A(fld)
CROSS APPLY A.fld.nodes(N'Localizations/Localization[@Culture=sql:variable("@language")]') B(loc)
WHERE Id = 1