Re: Column Type Suggestions

On Thu, Oct 29, 2009 at 9:34 PM, Blake Starkenburg <blake(at)oldride(dot)com> wrote:
> I am in the midst of planning for a new database which will contain specific
> keywords relating to different products. For example a "Microwave" may have
> the keywords HOUSEHOLD -> PANASONIC -> CAROUSEL -> CONVECTION -> 2200 WATTS.
> A pair of Levis may be CLOTHING -> LEVIS -> STONEWASHED -> BOOT CUT ->
> 36x34.
>
> Initially I had planned to use Postgresql's Array Column (keywords
> varchar(100)[]) but this has some limitations when using the LIKE operator,
> making searching for specific string of words difficult unless you know
> firsthand the array key (keywords[2] LIKE 'PANA%').
>
> Does anyone have any suggestions? Product keywords could vary from 1 up to
> 20, maybe more. Performance isn't a huge issue since the database table will
> be fairly small and on a local network. Appreciate all the input! NOTE:
> Using PHP5/Postgresql 8.3

Would ltree fit your problem?

http://www.postgresql.org/docs/8.4/interactive/ltree.html