in reply to Re: "undef" is not NULL and what to do about it
in thread "undef" is not NULL and what to do about it
Howdy!
NULL as used in relational databases still carries semantic ambiguity.
It could indicate that the value is absent, or it could indicate that the value is unknown. Or it could mean either. If I recall correctly, Codd called for multiple flavors of NULL.
yours,
Michael
Michael
In Section
Meditations