Postgres Pro
Downloads
Home   >   mailing lists

Re: [PATCH] Add `truncate` option to subscription commands - Mailing list pgsql-hackers

From Euler Taveira
Subject Re: [PATCH] Add `truncate` option to subscription commands
Date
Msg-id CAH503wBkx21fc5RBWLQFuxgrG43mVUN45oyUQBvORq2gH_YnsQ@mail.gmail.com
Whole thread Raw
In response to [PATCH] Add `truncate` option to subscription commands  (David Christensen <david@endpoint.com>)
Responses Re: [PATCH] Add `truncate` option to subscription commands  (David Christensen <david@endpoint.com>)
List pgsql-hackers
Tree view
On Fri, 9 Oct 2020 at 15:54, David Christensen <david@endpoint.com> wrote:

Enclosed find a patch to add a “truncate” option to subscription commands.

When adding new tables to a subscription (either via `CREATE SUBSCRIPTION` or `REFRESH PUBLICATION`), tables on the target which are being newly subscribed will be truncated before the data copy step.  This saves explicit coordination of a manual `TRUNCATE` on the target tables and allows the results of the initial data sync to be the same as on the publisher at the time of sync.

To preserve compatibility with existing behavior, the default value for this parameter is `false`.


Truncate will fail for tables whose foreign keys refer to it. If such a feature cannot handle foreign keys, the usefulness will be restricted.

Regards,

--
Euler Taveira                 http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

pgsql-hackers by date:

Previous
From: "David G. Johnston"
Date:
Subject: Re: Possible NULL dereferencing null pointer (src/backend/executor/nodeIncrementalSort.c)
Next
From: Christoph Berg
Date:
Subject: Re: powerpc pg_atomic_compare_exchange_u32_impl: error: comparison of integer expressions of different signedness (Re: pgsql: For all ppc compilers, implement compare_exchange and) fetch_add