> Peter Eisentraut wrote:
>
> > On Tue, 2 May 2000, Hiroshi Inoue wrote:
> >
> > > What kind of backward compatibity is required for psql etc..?
> >
> > I thought psql was some sort of a reference application, so sticking to
> > prehistoric technology is not necessarily required. For example, outer
> > joins will simplify psql a great deal but that would really mean it stops
> > working for everybody else. Not sure.
> >
> > The knowledge about the system catalogs is already pretty deep so keeping
> > track of changes across versions is similar to the initdb problem:
>
> Yes there's another example. PostgreSQL odbc driver wasn't able to talk
> to 7.0 backend until recently due to the change int28 -> int2vector.
> Now odbc driver could talk to all the backends from 6.2.
> We may have to hold some reference table between system catalogs
> and client appl/lib.
The big reason for the change is that int2vector is now more than 8
int2's (now 16), so there may be internal changes as well as a name
change for applications.
-- Bruce Momjian | http://www.op.net/~candle pgman@candle.pha.pa.us | (610)
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