Hi,

i'm looking for some item i can do and that have enough consensus to
make it worth the effort... :)

* Have sequence dependency track use of DEFAULT sequences, seqname.nextval?

what this means? i don't understand it...

* %Disallow changing default expression of a SERIAL column?

why? a SERIAL is not really a datatype but a short-hand to make an
integer with a nextval's sequence as default... so why making them 
both (the integer type and the nextval's sequence as default) act as
if it were a single unit?
Actually, i have dropped sequences created with SERIAL because i found
that was better to me to make it manually...

-- 
regards,
Jaime Casanova
(DBA: DataBase Aniquilator ;)

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