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Posted by --CELKO-- on 03/30/06 17:32
>> want to join 2 tables by a unique ID field [sic], but the ID field [sic] also has multiple NULLS which I do not want to ignore and I fear they will cause duplication. <<
Unh? "Unique identifier" is redundant and columns are not anything
like fields. Looking at your personal narrative, I see the magical,
vague "id" column violating the basic principle of data modeling that
data elements name distinct things and are not magical uiversal vague
creatures.
Please post some DDL with a key in each table. Without a key, these
things are not tables by definition.
You might also wantto take the time to learn RDBMS, so you so you do
not embarass yourself in future postings.
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