Обсуждение: BUG #1938: pg_dump mis-intreprets "default now()";
The following bug has been logged online: Bug reference: 1938 Logged by: Jeff MacDonald Email address: jeff@interchange.ca PostgreSQL version: 8.0.3 Operating system: FreeBSD 5.2.1 Description: pg_dump mis-intreprets "default now()"; Details: Hi, I did a backup from 7.3.2 using pg_dumpall. When I did a restore all of my timestamps that were defaulted to now(); were now defaulted to the time that I piped my dump back into postgres. Meaning the now() was parsed instead of just being copied.
On Tue, Oct 04, 2005 at 08:29:23PM +0100, Jeff MacDonald wrote: > I did a backup from 7.3.2 using pg_dumpall. > > When I did a restore all of my timestamps that were defaulted to now(); were > now defaulted to the time that I piped my dump back into postgres. > > Meaning the now() was parsed instead of just being copied. Are you sure the default was now() and not 'now'? If you still have the 7.3.2 server running then check the table definitions. Aside from using psql's \d commands, you could do this: SELECT adrelid::regclass, adnum, adsrc FROM pg_attrdef ORDER BY adrelid, adnum; The 7.3 documentation warns against using 'now', and the 7.4 Release Notes mention a behavior change with respect to column defaults. http://www.postgresql.org/docs/7.3/interactive/functions-datetime.html#FUNCTIONS-DATETIME-CURRENT http://www.postgresql.org/docs/7.4/interactive/release-7-4.html -- Michael Fuhr
Thanks ! Jeff. Michael Fuhr wrote: > On Tue, Oct 04, 2005 at 08:29:23PM +0100, Jeff MacDonald wrote: > >>I did a backup from 7.3.2 using pg_dumpall. >> >>When I did a restore all of my timestamps that were defaulted to now(); were >>now defaulted to the time that I piped my dump back into postgres. >> >>Meaning the now() was parsed instead of just being copied. > > > Are you sure the default was now() and not 'now'? If you still > have the 7.3.2 server running then check the table definitions. > Aside from using psql's \d commands, you could do this: > > SELECT adrelid::regclass, adnum, adsrc > FROM pg_attrdef > ORDER BY adrelid, adnum; > > The 7.3 documentation warns against using 'now', and the 7.4 Release > Notes mention a behavior change with respect to column defaults. > > http://www.postgresql.org/docs/7.3/interactive/functions-datetime.html#FUNCTIONS-DATETIME-CURRENT > http://www.postgresql.org/docs/7.4/interactive/release-7-4.html >