Am Samstag, den 03.12.2005, 22:23 +0100 schrieb Zoltan Boszormenyi: > Hi! > > I would like to add an entry to PostgreSQL 8.2 TODO: > - Extend SERIAL to a full-featured auto-incrementer type. > > To achieve this, the following three requirements should be fulfilled: > > 1. The statement parser should be able to handle this: > > create table x ( > id serial(N), > ... > ); > > and behind the scenes this would translate into the "create sequence ... > start N" > before creating the table.
why isnt N max_id? Or increment? Sounds inconsistent. -1 on this. > 2. Upon INSERTing to a serial column, explicitly given 0 value or > 'default' keyword > or omitted field (implicit default) should be interchangeable. default and omit are these. 0 would be an error. -1 on this too. > 3. When a serial field value is given in an INSERT or UPDATE statement > and the value is larger the the current value of the sequence then the > sequence > should be modified accordingly. sideeffects, raceconditions. -1 on this. > This is the way Informix handles its serial type, although it doesn't seem > to have a visible sequence bound to the serial column. Sounds like this informix is seriously broken ;) > Is it feasible in the 8.2 timeframe? I hope not ;) ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
