Re: Textmatchning

A B ha scritto:
> Hi.
> I would like to compare two columns a and b and find all cases where
> a is a part of b, like this
> select * from mytable where a ilike b;
>
> but that will not give me a row in the case when a = 'foo' and b='FOOTBALL'
> and I want that to be a match.
>
> So how do I rewrite my expression? I can't find any way to add % to
> make it match the way I want.
It seems that the order is important.
http://www.postgresql.org/docs/8.3/interactive/functions-matching.html#FUNCTIONS-LIKE

select 'foo%' ilike 'FOOTBALL';
----------
f

but

select 'FOOTBALL' ilike 'foo%';
----------
t

Edoardo