erobles <erobles(at)sensacd(dot)com(dot)mx> writes:
> how can i get the same info from postgres 7.2 , and be able to get
> the differences between 8.3 and 7.2
Before the pg_cast catalog there simply wasn't any explicit
representation of available casts. I think what you need to look for is
single-argument functions that have the same name as their result type,
but it was a long time ago.
regards, tom lane