Hello there!

I'm trying to use a blob filter in an Firebird Database. So far,I
have coded the function in a dll, declared the function as a
blob filter in the database and created a table that holds 3 fields,
an Id, a Blob subtype -1 and a Blob subtype -2. The Blob filter is
intended to pass from blob subtype -1 to -2. How do I call the
filter? do I need to coded something in the application that
connects to the database? I have already been told that the blob
filters can only be used through the Firebird API. Is this the only
way
that could be used? Is there a way to used with SQL?

Thanks

Marcelo Paniagua L.