Обсуждение: caveats upgrading from 7.0.3 to 7.2.x
am preparing to upgrade the postgres on our servers to 7.2.x from 7.0.3 aside from a dump restore requirements and backing up the 7.0.3 installation just in case something goes awry, is there anything from a data type or syntax that will cause any major hurdles as a result of this upgrade? Appreciate any forewarnings. Dave
On Friday 22 November 2002 18:12, Dave [Hawk-Systems] wrote: > am preparing to upgrade the postgres on our servers to 7.2.x from 7.0.3 > > aside from a dump restore requirements and backing up the 7.0.3 > installation just in case something goes awry, is there anything from a > data type or syntax that will cause any major hurdles as a result of this > upgrade? > > Appreciate any forewarnings. IIRC there aren't any negative syntax changes, i.e. which will break something. timestamp() has gone away, and SELECT ... LIMIT x,y has been replaced with SELECT ... LIMIT x OFFSET y in 7.3. The release history is here: http://www.postgresql.org/idocs/index.php?release.html http://www.postgresql.org/idocs/index.php?release-7-2.html http://www.postgresql.org/idocs/index.php?release-7-1.html I would recommend testing before you make the change though. Ian Barwick barwick@gmx.net
"Dave [Hawk-Systems]" <dave@hawk-systems.com> writes: > aside from a dump restore requirements and backing up the 7.0.3 > installation just in case something goes awry, is there anything > from a data type or syntax that will cause any major hurdles as a > result of this upgrade? Unfortunately, there are a bunch of minor issues that you may run into, but I'm not aware of an exhaustive list of them (we're trying to be better about documenting backwards incompatibilities in 7.3, but that doesn't help you much). My suggestion would be to do a trial run: load a 7.0.3 dump into a test 7.2 installation on a development box and see if your application works on it -- it should be easy to fix any problems that might crop up. Then make a new dump and do the migration for the production system. Cheers, Neil -- Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC
On Fri, 2002-11-22 at 13:21, Ian Barwick wrote: > On Friday 22 November 2002 18:12, Dave [Hawk-Systems] wrote: > > am preparing to upgrade the postgres on our servers to 7.2.x from 7.0.3 > > > > aside from a dump restore requirements and backing up the 7.0.3 > > installation just in case something goes awry, is there anything from a > > data type or syntax that will cause any major hurdles as a result of this > > upgrade? > > > > Appreciate any forewarnings. > > IIRC there aren't any negative syntax changes, i.e. which > will break something. timestamp() has gone away, and > SELECT ... LIMIT x,y has been replaced with SELECT ... LIMIT x OFFSET y > in 7.3. > I tested this about 9 months ago, and the timestamp syntax was an issue (due to changes in how timezones were referenced) so you'll want to check that. I also remember some issues we had because our lead C developer had created some functions that generated invalid sql statements that we're accepted in 7.0.x but rejected on 7.2.x, so you'll need to check your application for issues like that that might crop up. I might suggest you take a look at 7.3 which, while currently in beta, will be released within a fortnight. Robert Treat