Обсуждение: DDL for a single schema
Is there a way to get a dump of all the DDL and data associated with a single schema within a database? What I tried in attempting to hack this out was \dt consume.* and \dv consume.* to get a list of tables and views in the schema named "consume", then sent those lists to a file "tables.txt". Followed that with something like for n in `cat tables.txt` do; pg_dump -t $n >> consume.sql; done This almost worked, except for that I have some duplicate table names in other schemas, and the pg_dump picked up both the table I wanted in the consume schema and the the similarly-named table in a different schema. I'd really like to be able to get the complete dump for one schema and no more. Might work if you could specify a schema-qualified table name in the -t option of pg_dump, but that apparently is not possible currently. I tried also using pg_restore to generate a list file, thinking I could edit the output list file to include only the tables from desired schema. This would really be a better approach than what I've show above, but having the duplicate table names was again the problem because nothing in the list file distinquishes which schema the tables are members of. ~Berend Tober
On Friday 07 November 2003 18:53, btober@seaworthysys.com wrote: > Is there a way to get a dump of all the DDL and data associated with a > single schema within a database? > > What I tried in attempting to hack this out was > > \dt consume.* > > and > > \dv consume.* > > to get a list of tables and views in the schema named "consume", then > sent those lists to a file "tables.txt". Followed that with something > like > > for n in `cat tables.txt` do; pg_dump -t $n >> consume.sql; done pg_dump in 7.4 has the dump option. You need to use --schema as option. Check developers documentation on web site or download RC1 and try out yourself. HTH Shridhar
On Friday 07 November 2003 19:36, Shridhar Daithankar wrote: > On Friday 07 November 2003 18:53, btober@seaworthysys.com wrote: > > Is there a way to get a dump of all the DDL and data associated with a > > single schema within a database? > > > > What I tried in attempting to hack this out was > > > > \dt consume.* > > > > and > > > > \dv consume.* > > > > to get a list of tables and views in the schema named "consume", then > > sent those lists to a file "tables.txt". Followed that with something > > like > > > > for n in `cat tables.txt` do; pg_dump -t $n >> consume.sql; done > > pg_dump in 7.4 has the dump option. You need to use --schema as option. > > Check developers documentation on web site or download RC1 and try out > yourself. http://developer.postgresql.org/docs/postgres/app-pgdump.html Sorry for missing it first time.. Shridhar
> On Friday 07 November 2003 19:36, Shridhar Daithankar wrote: >> On Friday 07 November 2003 18:53, btober@seaworthysys.com wrote: >> > Is there a way to get a dump of all the DDL and data associated >> with a single schema within a database? >> pg_dump in 7.4 has the dump option. You need to use --schema as >> option. >> >> Check developers documentation on web site or download RC1 and try >> out >> yourself. > > http://developer.postgresql.org/docs/postgres/app-pgdump.html > > Sorry for missing it first time.. > > Shridhar Thanks. Didn't have immediate plans to upgrade from 7.3. But I'll look for that feature when the time comes. ~Berend Tober
On Friday 07 November 2003 14:28, btober@seaworthysys.com wrote: > > On Friday 07 November 2003 19:36, Shridhar Daithankar wrote: > >> On Friday 07 November 2003 18:53, btober@seaworthysys.com wrote: > >> > Is there a way to get a dump of all the DDL and data associated > >> > >> with a single schema within a database? > >> pg_dump in 7.4 has the dump option. You need to use --schema as > >> option. > Thanks. Didn't have immediate plans to upgrade from 7.3. But I'll look > for that feature when the time comes. I believe 7.4 pg_dump should work against a 7.3 database (and further back IIRC). -- Richard Huxton Archonet Ltd
Richard Huxton <dev@archonet.com> writes:
> I believe 7.4 pg_dump should work against a 7.3 database (and further back
> IIRC).
It will, but I don't think we guarantee that the output will load into a
pre-7.4 database --- pg_dump usually assumes its SQL output can take
advantage of all the features it knows about.
This might work more-or-less-okay for 7.3, but you'd better test before
depending on it.
regards, tom lane
On Fri, 2003-11-07 at 08:23, btober@seaworthysys.com wrote: > Is there a way to get a dump of all the DDL and data associated with a > single schema within a database? The 7.4 pg_dump is capable of this task (--schema=SCHEMA) but you may have difficulties restoring to a 7.3 backend.