Re: How to write UDF in C that resemble the LIKE function

b t <qtboyzz(at)yahoo(dot)com> writes:
> I have a question, as part of the project that I have to do for
> school, we have to implement a User Define Function in C that is
> similar like the LIKE funtion in PostgreSQL. For example where a
> customer is searching for an actor whose last name sounds like
> "Schwarseneger" (notice the typo). However, the customer is not sure
> neither about the spelling nor the pronunciation. The real star name
> should be "Schwarzenegger". In this case, the "LIKE" operator in SQL
> is not capable enough. It would be nice if the search would match last
> names "similar to" "Schwarseneger". Can Some one please give me some
> pointer on this or even sample code that you might have
> implemented. So basically the thing that I'm doing is like a spell
> check system where it return the closest match to the word.

Didn't your professor notice that there are two or three of those
already in contrib/fuzzystrmatch?

regards, tom lane