Tom Lane wrote:
Default display for NULL should be a zero-length string.
That's just as broken as Pavel's suggestion. Unless you have something
that is guaranteed distingishable from the output of any non-null value,
you really can't make a significant improvement here.
Right. This is the problem we solved in CSV processing by distinguishing
between quoted and unquoted values that could be null - the CSV rule is
that a null value isn't quoted.
cheers
andrew
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