On Wed, 2011-09-28 at 12:33 +0530, Siva Palanisamy wrote:
Hi All,
I am trying to retrieve the contact names based on the keyed search string. It performs good for the English alphabets and behaves strangely for special chars such as _,/,\,%
The % character is used by SQL as the wild card for searching. To search for Mecklenburg county (in North Carolina) from a list of US counties you might try meck% to find all the counties that start with meck. (%meck for those that end in meck and %meck% for any that contain meck). The use of % is in the SQL standard and is used by all the all the SQL dialects I am familiar with.
My query in the function is similar to
SELECT contact_name FROM contacts WHERE LOWER(contact_name) LIKE LOWER('_McDonald%') ORDER BY LOWER(contact_name) ASC LIMIT 1;
I would expect you to get anything that starts with _mcdonald (_mcdonald, james) not say james mcdonald (%mcdonald% would work) . The underline (_) is not the same as a space. To search with leading space try '% mcdonald%'
It looks like, during searching, it retrieves all the contact names instead of the desired. The similar bizarre happens for the above mentioned special chars. I need to support these. How do I educate postgres to consider these chars? Please guide me.
Thanks and Regards,
Siva.
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