++ 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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