我有这个XML:
<qrcode xmlns="http://vital.nl/qrcodeSchema.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Echeq>
<echeqFamilyId>67c8590e-66fe-43e1-9124-a2163a6365df</echeqFamilyId>
</Echeq>
</qrcode>
但是我想得到这个:
<qrcode xmlns="http://vital.nl/qrcodeSchema.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Echeq>
<awardedVPoints>0</awardedVPoints>
<echeqFamilyId>67c8590e-66fe-43e1-9124-a2163a6365df</echeqFamilyId>
</Echeq>
</qrcode>
我试图得到这样的结果:
UPDATE[dbo].[QRCodeDefinitions]
SET[QRCodeXml] = CAST(REPLACE(CAST([QRCodeXml] as nvarchar(max)), '', '<awardedVPoints>0') AS xml)
FROM [dbo].[QRCodeDefinitions]
WHERE qrcode = 'newvcheq'
但是xml中没有任何变化。
所以我必须改变什么?
谢谢
好,所以我尝试了这个:
;WITH XMLNAMESPACES(N'http://vital10.nl/qrcodeSchema.xsd' AS ns)
UPDATE [dbo].[QRCodeDefinitions]
SET QRCodeXml = QRCodeXml.query('
declare default element namespace "http://vital.nl/qrcodeSchema.xsd";
<qrcode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
{
for $x in ns:/qrcode/*
return (
if (empty($x/../awardedVPoints)) then (<awardedVPoints> {"0"}</awardedVPoints>)
else (), $x)
}
</qrcode>')
FROM [dbo].[QRCodeDefinitions]
WHERE qrcode = 'newvcheq'
但是后来我明白了:
Msg 9332,第16级,状态1,第38行 XQuery [dbo.QRCodeDefinitions.QRCodeXml.query()]:':'附近的语法错误,预期为'where','(stable)order by'或'return'。
如果我这样做:
UPDATE [dbo].[QRCodeDefinitions]
SET [QRCodeXml] = [QRCodeXml].query('
declare default element namespace "http://vital.nl/qrcodeSchema.xsd";
<qrcode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
{
for $x in /qrcode/*
return (
if (empty($x/../awardedVPoints)) then (<awardedVPoints> {"0"}</awardedVPoints>)
else (), $x)
}
</qrcode>')
FROM [dbo].[QRCodeDefinitions]
WHERE qrcode = 'newvcheq'
然后我收到此错误:
XML验证:无效的内容。期望的元素:'{http://vital.nl/qrcodeSchema.xsd} ExternalUrl','{http://vital.nl/qrcodeSchema.xsd}平台','{http://vital.nl/qrcodeSchema.xsd}图像','{http://vital10.nl/qrcodeSchema.xsd}位置','{http://vital.nl/qrcodeSchema.xsd} Echeq' ,“ {http://vital.nl/qrcodeSchema.xsd}视频”。找到:代替元素'{http://vital10.nl/qrcodeSchema.xsd} awardedVPoints'。位置:/ :qrcode [1] /:awardedVPoints [1]。
所以我必须改变什么?谢谢
表设计。这是表格的详细信息。与所有表格字段
CREATE TABLE [dbo].[QRCodeDefinitions]
(
[QRCode] [nvarchar](256) NOT NULL,
[Title] [nvarchar](256) NOT NULL,
[Description] [nvarchar](max) NOT NULL,
[CreatedBy] [uniqueidentifier] NOT NULL,
[CreatedOn] [datetime2](7) NOT NULL,
[UpdatedOn] [datetime2](7) NOT NULL,
[ValidUntil] [datetime2](7) NOT NULL,
[LastScannedOn] [datetime2](7) NULL,
[TotalScanned] [bigint] NOT NULL,
[MaxAllowedToScan] [bigint] NULL,
[MaxAllowedToScanByParticipant] [bigint] NULL,
[ScanFrequency] [bigint] NULL,
[ScanFrequencyType] [int] NOT NULL,
[ActionType] [int] NOT NULL,
[QRCodeXml] [xml](CONTENT [dbo].[QRCodeSchema-2019-07-23]) NULL,
[PublishState] [int] NOT NULL,
CONSTRAINT [PK_QRCodeDefinitions] PRIMARY KEY CLUSTERED
(
[QRCode] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE [dbo].[QRCodeDefinitions] ADD DEFAULT ((0)) FOR [PublishState]
GO
所以这必须是正确的答案:
UPDATE [dbo].[QRCodeDefinitions]
SET QRCodeXml = QRCodeXml.query('
declare default element namespace "http://vital10.nl/qrcodeSchema.xsd";
<qrcode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
{
for $x in /qrcode/*
return (
if (empty($x/../awardedVPoints)) then (<awardedVPoints>{"0"}</awardedVPoints>)
else (), $x)
}
</qrcode>')
FROM[dbo].[QRCodeDefinitions]
WHERE qrcode = 'newvcheq';
请尝试以下解决方案。它正在使用XQuery及其FLWOR表达式。