pg_restore -t table doesn't restore PKEY
Hello,
I have dump of an entire database and I'm trying to restore only one named
table:
pg_restore --format=c -C -U myUser -d myDB /tmp/mydump -t my_table
The command completes without errors/warnings but the resulting table in the
database is missing the PKEY constraint !
Is this done on purpose ? What is the correct way to restore a named table
?
I know I can use the -t switch during the dump and then restore without
using -t but I would like to avoid this solution. The files I can work on
are dumps of the entire DB.
Thanks for your help,
Jan
"Jan C." <chaljan@gmail.com> writes:
I have dump of an entire database and I'm trying to restore only one named
table:
pg_restore --format=c -C -U myUser -d myDB /tmp/mydump -t my_table
The command completes without errors/warnings but the resulting table in the
database is missing the PKEY constraint !
Use pg_restore -l, then extract the lines relevant to your table, then
pg_restore -L to restore just the named items.
I think there's a TODO to make pg_restore's -t switch work more like
pg_dump's, but at the moment they're really quite different animals.
pg_restore doesn't have any logic about "oh, if he asked for this
item I bet he wants that one too".
regards, tom lane
So I'd have to do:
pg_restore -l /tmp/mydump | grep my_table > /tmp/mytable_lines
pg_restore --format=c -C -U myUser -d myDB /tmp/mydump -L /tmp/mytable_lines
It looks like I have to use "grep" to look for my table and not "-t
my_table" because the PKEY constraint is NOT listed when I do
pg_restore -l /tmp/mydump -t my_table
In any case, shouldn't the documentation describe more the pg_restore
-t command ? It's really misleading and one can discover this only by
running into problems.
Thanks for your help,
Jan
Show quoted text
On Fri, Oct 29, 2010 at 4:30 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
"Jan C." <chaljan@gmail.com> writes:
I have dump of an entire database and I'm trying to restore only one named
table:pg_restore --format=c -C -U myUser -d myDB /tmp/mydump -t my_table
The command completes without errors/warnings but the resulting table in the
database is missing the PKEY constraint !Use pg_restore -l, then extract the lines relevant to your table, then
pg_restore -L to restore just the named items.I think there's a TODO to make pg_restore's -t switch work more like
pg_dump's, but at the moment they're really quite different animals.
pg_restore doesn't have any logic about "oh, if he asked for this
item I bet he wants that one too".regards, tom lane