Would it be possible to have parameters in the SERIAL datatype?

CREATE TABLE x { ID  SERIAL(100, 10) }

means ID starts at 100 and will be incremented by 10.  And it would be
nice to have

CREATE TABLE x { ID  SERIAL(0,0) }

mean that ID will be issued random non-repeating values (period=2^bitwidth
of type).  This is most likely useful in replication/merging data.



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