Обсуждение: case insensitive search

hello,
        how to do a case insensitive search on postgresql database. i will
enter a keyword in text field and it has to search for that keyword in
keywords field of table and should be case insensitive.

can i use egrei() function. if so how.here two attributes should be
strings. but first attribute i will get from previous php page and second
attribute is field name of database table. how do i do this.
  pls help me
      thanking you
       Arun

Hello arun,

ak>         how to do a case insensitive search on postgresql database. i will
ak> enter a keyword in text field and it has to search for that keyword in
ak> keywords field of table and should be case insensitive.

why don't you use "ilike" to search for the pattern in the database.

--
Best regards,
 Gurudutt                            mailto:guru@indvalley.com

Life is not fair - get used to it.
Bill Gates

Have you looked in the manual?

Try: 'where ILIKE 'searchword';

At 12:01 PM +0530 3/15/02, arun kv wrote:
>hello,
>        how to do a case insensitive search on postgresql database. i will
>enter a keyword in text field and it has to search for that keyword in
>keywords field of table and should be case insensitive.
>
>can i use egrei() function. if so how.here two attributes should be
>strings. but first attribute i will get from previous php page and second
>attribute is field name of database table. how do i do this.
>  pls help me
>      thanking you
>       Arun
>
>
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I also use the ~* operator for situations like these

select * from table
where field ~* 'searchterm'
and ....

Tim.

Timothy P. Maguire
Web Developer II
Harte-Hanks
978 436 3325




      
                      Jon Hassen
      
                      <jhassen@azstarnet.        To:       arun kv <arun@library.iisc.ernet.in>, PGSQL
      
                      com>                        <pgsql-php@postgresql.org>
      
                      Sent by:                   cc:
      
                      pgsql-php-owner@pos        Subject:  Re: case insensitive search
      
                      tgresql.org
      

      

      
                      03/15/2002 12:36 PM
      

      

      




Have you looked in the manual?

Try: 'where ILIKE 'searchword';

At 12:01 PM +0530 3/15/02, arun kv wrote:
>hello,
>        how to do a case insensitive search on postgresql database. i will
>enter a keyword in text field and it has to search for that keyword in
>keywords field of table and should be case insensitive.
>
>can i use egrei() function. if so how.here two attributes should be
>strings. but first attribute i will get from previous php page and second
>attribute is field name of database table. how do i do this.
>  pls help me
>      thanking you
>       Arun
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org




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Gurudutt schrieb:
> Hello arun,
>
> ak>         how to do a case insensitive search on postgresql database. i will
> ak> enter a keyword in text field and it has to search for that keyword in
> ak> keywords field of table and should be case insensitive.
>
> why don't you use "ilike" to search for the pattern in the database.

or POSIX:

4.6.2. POSIX Regular Expressions

Table 4-10. Regular Expression Match Operators

Operator Description            Example
~     regex, case sensitive        'thomas' ~ '.*thomas.*'
~*     regex, case insensitive    'thomas' ~* '.*Thomas.*'
!~     not regex, case sensitive    'thomas' !~ '.*Thomas.*'
!~*     not regex, case insensitive    'thomas' !~* '.*vadim.*'

G,
K