Thread: Help needed in Search
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 _,/,\,%
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;
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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On Wed, 2011-09-28 at 12:33 +0530, Siva Palanisamy wrote:
Hi All,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.
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 _,/,\,%
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%'
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;
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.
::DISCLAIMER::
-----------------------------------------------------------------------------------------------------------------------
The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only.
It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in
this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates.
Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of
this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have
received this email in error please delete it and notify the sender immediately. Before opening any mail and
attachments please check them for viruses and defect.
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