On Friday 22 June 2007, David Goodenough wrote:
> I have a table that consists of a set of regular expressions, a priority
> and a result. I need to be able to match field in another table against
> the set of regular expressions (ordered by priority) and use the first
> result.
>
> Reading the documentation I can see how to put the regular expression
> into an SQL statement (that is as text or a ? which my code provides) but
> I can not see how to get the expression from the table.
>
> David
>
> ---------------------------(end of broadcast)---------------------------
> TIP 2: Don't 'kill -9' the postmaster
OK, I worked it out for myself. Of course I can put a field name on the
right hand side of the SIMILAR TO and the ? on the left had side, then it
works just as you would expect. So:-
select result from rules where ? similar to "rule" order by priority limit 1
gives me the answer I want.
David