Escaping special characters Full text index search

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Escaping special characters Full text index search

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jeepee_in

Posted Wednesday, January 16, 2008 2:22 PM

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I have created a full text index on a column of a table. The issue is i need to search for AT&T.
the query i use for search is

SELECT * FROM TABLE_NAME WHERE CONTAINS(COLUMN_NAME, '"AT&T*"')

It returns many records but doesn't return the records with AT&T in it. I guess '&' is killing it, but i have no idea how to escape it in case of full text index search.
Any help will be deeply appreciated.

Post #444012

dimitris.staikos

Posted Sunday, July 08, 2012 4:51 AM

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Last Login: Wednesday, October 24, 2012 11:28 AM
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The '*' is killing you. Use '%' instead.

If you want to search for text that for example contains % or other special characters you have to escape them.
See the example below:

SELECT * FROM
(
SELECT UserName + '&%' + Email AS A FROM Employees
) G
WHERE G.A LIKE '%s&!%x%' ESCAPE '!'

I am concatenating two fields adding &% in between. No escaping needed there.
And I want to look for any record that has the literal pattern 's&%x' inside it

So in the LIKE however, I start with an '%s (the equivalent of *), follow with an 's', follow with an '&' (no escaping needed) and then I escape the '%' using any character I like, so I chose '!'. Then follows 'x' and '%' for the rest of the string.

Pretty straightforward right?

Cheers
Dimitris

Post #1326556

Jeff Moden

Posted Sunday, July 08, 2012 12:27 PM

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dimitris.staikos (7/8/2012)

The '*' is killing you. Use '%' instead.

Keep in mind that this isn't standard T-SQL. It's Full Text Search.

--Jeff Moden

"RBAR is pronounced "ree-bar" and is a "Modenism" for "Row-By-Agonizing-Row".

First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column."

For better, quicker answers on T-SQL questions, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537/

For better answers on performance questions, click on the following...
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/

Post #1326600

dimitris.staikos

Posted Wednesday, July 18, 2012 4:52 AM

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Yeah, you are right, thanks Smile

Post #1331356

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