Wayne Schroeder <raz (AT) chewies (DOT) net> writes:
It's not really very practical; among other things you'd lose the
ability to specify a START value different from MIN. Of course, if we
wanted to break backwards compatibility wholesale, we could doubtless
add a separate column for START, do away with is_called altogether in
favor of representing not-iscalled by last_value = null, etc. But I
doubt it's worth the pain of breaking clients that know the existing
definitions of these fields.

regards, tom lane

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