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Re^2: "undef" is not NULL and what to do about it

by nikosv (Hermit)
on Feb 20, 2013 at 20:07 UTC ( #1019838=note: print w/ replies, xml ) Need Help??


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

++ for the link!

This is one of the reasons why we - in ALLL our database types - disallow NULL values. All fields should have (default) values

can't avoid the nulls produced by the outer joins though,i.e a left one

If I insert an empty string into a varchar field in Oracle, it helpfully inserts a NULL instead

I am not familiar with Oracle;how does it behave when when you put a not null constraint on the column?

catering for nulls is such an important issue that for example C# introduced Nullable Types into the core language


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