This is maybe a novice question, but after all...
Say, I have a discussion forum application. There is an expiration
value for a whole board; then there are individual values for every
conference. If this individual value is NULL then the general value
should be used. How can I test this situation in a query (to
Postgresql):
I mean something like:
Select (IF conf.expire NOTNULL conf.expire ELSE gen_expire)
as expire, ...
Where is this in manuals if it is?
Thanks
Esa