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.
>
> > Are there any documentations about it ?
>
> Yes.
Unfortunately it's always painful for me to look for a documentation.
Could you please tell me where we could find it ?
Regards.
Hiroshi Inoue
Inoue@tpf.co.jp
