SQL LIKE Operator doesn't work with Asian Languages (SQL Server 2008)
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11-10-2019 - |
Question
Dear Friends, I've faced with a problem never thought of ever. My problem seems too simple but I can't find a solution to it. I have a sql server database column that is of type NVarchar and is filled with standard persian characters. when I'm trying to run a very simple query on it which incorporates the LIKE operator, the resultset becomes empty although I know the query term is present in the table. Here is the very smiple example query which doesn't act corectly: SELECT * FROM T_Contacts WHERE C_ContactName LIKE '%ف%'
ف is a persian character and the ContactName coulmn contains multiple entries which contain that character.
Please tell me how should I rewrite the expression or what change should I apply. Note that my database's collation is SQL_Latin1_General_CP1_CI_AS.
Thank you very much
Solution
Also, if those values are stored as NVARCHAR
(which I hope they are!!), you should always use the N'..'
prefix for any string literals to make sure you don't get any unwanted conversions back to non-Unicode VARCHAR
.
So you should be searching:
SELECT * FROM T_Contacts
WHERE C_ContactName COLLATE Persian_100_CI_AS LIKE N'%ف%'
OTHER TIPS
Shouldn't it be:
SELECT * FROM T_Contacts WHERE C_ContactName LIKE N'%ف%'
ie, with the N
in front of the comparing string, so it treats it like an nvarchar
?