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making search better with LIKE

Posted on 2011-09-15
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Last Modified: 2012-05-12
Hi, i want to search the content on some rows. i have an sql query that uses like but some times is not working since in Portuguese we have a lots accents like á, â, à. so i want the like behave like this:)

if someone is searching for the work:       especialização

the like should return results for all:  especializaçao, especializacão, especialização, and also the usual results for like:     testespecialização.

any help?
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Question by:rafaelrgl
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Expert Comment

by:Kevin Cross
ID: 36546742
You need to set the collation to NOT be "accent sensitive" then it will work. If you cannot or do not want to change the collation for that column, you can use the COLLATE operator in conjunction with your LIKE.

WHERE your_column COLLATE SQL_Latin1_General_CP1_CI_AI LIKE '%especialização%'
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Expert Comment

by:Kevin Cross
ID: 36546745
And you can always pick a collation more appropriate for you like the one for Portugese. The key is to make sure the AI part is there versus AS which is "accent sensitive" -- http://msdn.microsoft.com/en-us/library/ms184391.aspx
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by:rafaelrgl
ID: 36546934
is changing this on sql database property changes any data structure? or anything else beside the way where like works?
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Expert Comment

by:Kevin Cross
ID: 36547008
If you set it at the database level that will be the default. If you already have objects dependent on the current collation, then you may get a failure trying to change this globally. You can always set a specific column to the collation you need if that is the case.
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by:rafaelrgl
ID: 36547011
i change the property for collate on the sql database and try make where mycolumn like '%especializacao%'

and did not return anything, but when i added also on the query WHERE your_column COLLATE SQL_Latin1_General_CP1_CI_AI LIKE '%especialização%'

then i works. any idea why did not work changing the property on the database instead of using on the query?
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Author Comment

by:rafaelrgl
ID: 36547015
sorry that query:
 WHERE your_column COLLATE SQL_Latin1_General_CP1_CI_AI LIKE '%especializacao%'

returns all with accent or not
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Accepted Solution

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Kevin Cross earned 2000 total points
ID: 36547027
The COLLATION must not have take effect on the column. Check that it says <database_default> on that column and then try REFRESH of database or disconnect/reconnect.
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Author Closing Comment

by:rafaelrgl
ID: 36547056
thanks so muchhh :)))
how long do u work with sql? you are genius
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Expert Comment

by:Kevin Cross
ID: 36547101
Thank you for the compliment! I feel like I have a lot more to learn, but you pick a few things in 12 years. ;)
Best regards and happy coding,

Kevin
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