While examining some minor licensing issues on EnterpriseDB Studio, I
examined the whole package a little. Apparently EDB tries to be an
Oracle lookalike. They stripped aggregates, conversions, domains,
operators support from pgAdmin, and added compatibility functions, views
and tables as well as stored procedures which are implemented as in/out
functions with the edbspl language (using a proargdirs column).
Since in/out function support for pgsql8.1 were necessary anyway, I
threw in some more lines to support EDB with vanilla pgAdmin too.
Regards,
Andreas