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