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SQL help: if not found return default type

rmtdev
rmtdev asked
on
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Last Modified: 2012-05-12
Is there a way to do this, if the query does not return anything with person_type = 2, return the record where "person_type is null" instead.
               
               select * from person where person_type is null
               not exists
               select * from person where person_type = 2
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