Michael Van Canneyt wrote:
Not everywhere. In Oracle empty strings are Null (which is why we have
special code for this situation in our business
application).
That's a deviation from the standard. NULL means "we don't know", empty
means "we know it is empty"
Actually, it means "we don't know and won't be told" since null or true
-> null and so on.
A bit like some political movements, frankly :-)
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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