Обсуждение: Schema dump

Sonam Sharma <sonams1209@gmail.com> writes:
> I took a schema dump using : pg_dump -n schema dbname .
> When I restored this , it doesn't contain the constraints and indexes. Can
> someone please help how to take a dump including all

Hmph ... works for me.  Where by "works", I mean "the dump contains
constraints and indexes belonging to tables in the specified schema,
and not any others".  Maybe you could provide a little more detail?

(One thing I notice is that the dump doesn't contain a "CREATE
SCHEMA schema" command, so you have to do that manually before
you restore.  I guess this fits with the definition of the switch
as selecting objects *in* the named schema, but it's still a
possible gotcha.)

            regards, tom lane

On 1/2/20 5:47 AM, Tom Lane wrote:
> Sonam Sharma <sonams1209@gmail.com> writes:
>> I took a schema dump using : pg_dump -n schema dbname .
>> When I restored this , it doesn't contain the constraints and indexes. Can
>> someone please help how to take a dump including all
> 
> Hmph ... works for me.  Where by "works", I mean "the dump contains
> constraints and indexes belonging to tables in the specified schema,
> and not any others".  Maybe you could provide a little more detail?
> 
> (One thing I notice is that the dump doesn't contain a "CREATE
> SCHEMA schema" command, so you have to do that manually before
> you restore.  I guess this fits with the definition of the switch
> as selecting objects *in* the named schema, but it's still a
> possible gotcha.)

What version? As I see:

pg_dump -U postgres -d production -n utility -f utility_sch.sql

In utility_sch.sql:

CREATE SCHEMA utility;

I ask because the docs:

https://www.postgresql.org/docs/12/app-pgdump.html

"Dump only schemas matching pattern; this selects both the schema 
itself, and all its contained objects. "

support the idea that the schema definition is dumped.

> 
>             regards, tom lane
> 
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com

On 1/2/20 5:47 AM, Tom Lane wrote:
> Sonam Sharma <sonams1209@gmail.com> writes:
>> I took a schema dump using : pg_dump -n schema dbname .
>> When I restored this , it doesn't contain the constraints and indexes. Can
>> someone please help how to take a dump including all
> 
> Hmph ... works for me.  Where by "works", I mean "the dump contains
> constraints and indexes belonging to tables in the specified schema,
> and not any others".  Maybe you could provide a little more detail?
> 
> (One thing I notice is that the dump doesn't contain a "CREATE
> SCHEMA schema" command, so you have to do that manually before
> you restore.  I guess this fits with the definition of the switch
> as selecting objects *in* the named schema, but it's still a
> possible gotcha.)

Caffeine kicked in, now I remember how the above happens:

pg_restore -n utility -f pgrestore_utility.sql /production_12.out

In pgrestore_utility.sql there is no CREATE SCHEMA.

This came up in a previous thread:

https://www.postgresql.org/message-id/6234.1569941612%40sss.pgh.pa.us

> 
>             regards, tom lane
> 
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com

On 1/2/20 9:04 AM, Sonam Sharma wrote:
> Thanks Adrian, it worked :)

What worked?

Still not clear what was not working in the first place?

> 
> On Thu, Jan 2, 2020, 9:50 PM Adrian Klaver <adrian.klaver@aklaver.com 
> <mailto:adrian.klaver@aklaver.com>> wrote:
> 
>     On 1/2/20 5:47 AM, Tom Lane wrote:
>      > Sonam Sharma <sonams1209@gmail.com <mailto:sonams1209@gmail.com>>
>     writes:
>      >> I took a schema dump using : pg_dump -n schema dbname .
>      >> When I restored this , it doesn't contain the constraints and
>     indexes. Can
>      >> someone please help how to take a dump including all
>      >
>      > Hmph ... works for me.  Where by "works", I mean "the dump contains
>      > constraints and indexes belonging to tables in the specified schema,
>      > and not any others".  Maybe you could provide a little more detail?
>      >
>      > (One thing I notice is that the dump doesn't contain a "CREATE
>      > SCHEMA schema" command, so you have to do that manually before
>      > you restore.  I guess this fits with the definition of the switch
>      > as selecting objects *in* the named schema, but it's still a
>      > possible gotcha.)
> 
>     Caffeine kicked in, now I remember how the above happens:
> 
>     pg_restore -n utility -f pgrestore_utility.sql /production_12.out
> 
>     In pgrestore_utility.sql there is no CREATE SCHEMA.
> 
>     This came up in a previous thread:
> 
>     https://www.postgresql.org/message-id/6234.1569941612%40sss.pgh.pa.us
> 
>      >
>      >                       regards, tom lane
>      >
>      >
> 
> 
>     -- 
>     Adrian Klaver
>     adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com