Thread: Help needed in Search

Help needed in Search

From

Siva Palanisamy

Date:

28 September 2011, 12:51:05

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.

::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.

-----------------------------------------------------------------------------------------------------------------------

Re: Help needed in Search

From

Filip Rembiałkowski

Date:

29 September 2011, 20:47:14

Siva,

in addition to what others said, please note that underscore matches any character. to change it use escape char.

http://www.postgresql.org/docs/9.1/static/functions-matching.html#FUNCTIONS-LIKE

2011/9/28 Siva Palanisamy <siva_p@hcl.com>

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.

::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.

-----------------------------------------------------------------------------------------------------------------------