Peter Eisentraut <[EMAIL PROTECTED]> writes:
> Moreover, the unset state shouldn't exist at all.  No parameter can behave 
> reasonably if unset behaved differently from an empty string.  Explicitly 
> assigning an unset state doesn't work.  So it seems that for all external 
> communication, an unset string parameter should simply display the empty 
> string.

I wouldn't object to that, but my recollection is that that was once the
behavior, and somebody insisted it was bad.

                        regards, tom lane

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