Searching XML column in sql server
Question
Trying to search column Data, its an xml column
[dbo].[HistoryData].[Data].exist('//text()[CONTAINS(., 'Request viewed' )]') = 1
I get error Incorrect syntax near 'Request'. What am i missing here? kindly assist.
Column Data has this:
<MessageNotification xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<AttorneyID xsi:nil="true" />
<MatterID xsi:nil="true" />
<NotificationID xsi:nil="true" />
<MessageId>3566913</MessageId>
<ParentMessageGuid xsi:nil="true" />
<MessageGuid>fc54e518-e45d-4564-8b80-2593796d5b</MessageGuid>
<Subject>Firm not registered </Subject>
<MessageDate>2015-06-19T10:05:48.4493646+02:00</MessageDate><Body>
This is just a message
Thank you
</Body>
<ContactPerson> N/A </ContactPerson><ContactDetails xsi:nil="true" />
<PreferredContactMethod>NotApplicable</PreferredContactMethod>
</MessageNotification>
1 answers
solution1
2 ACCPTED 2018-04-04 07:54:50
The syntax error are the single quotes obviously.
But I think there is more around... What are you trying to achieve?
The exist() is checking for the pure existance and in most cases used within a WHERE clause in order to reduce the rows before a more expensive operations.
Try this:
DECLARE @dummyTable TABLE(ID INT IDENTITY, YourXML XML);
INSERT INTO @dummyTable VALUES
(N'<root>
<a>test</a>
<a>Some other</a>
</root>')
,(N'<root>
<a>no</a>
<a>Some other</a>
</root>')
,(N'<root>
<a>no</a>
<a>test</a>
</root>');
SELECT *
FROM @dummyTable
WHERE YourXML.exist(N'//*[contains(text()[1],"test")]')=1;
The result set comes without line 2
UPDATE: Use a variable
In order to get this more generic I'd suggest to use a variable:
DECLARE @SearchFor NVARCHAR(100)='other';
SELECT *
FROM @dummyTable
WHERE YourXML.exist(N'//*[contains(text()[1],sql:variable("@SearchFor"))]')=1;
This comes without line 3
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