Re: Added schema level support for publication.

Hi Vignesh,

I had a look at the patch, please consider following comments.

On Thu, Jan 7, 2021 at 10:03 PM vignesh C <vignesh21@gmail.com> wrote:

> Hi,
>
> This feature adds schema option while creating publication. Users will
> be able to specify one or more schemas while creating publication,
> when the user specifies schema option, then the data changes for the
> tables present in the schema specified by the user will be replicated
> to the subscriber. Few examples have been listed below:
>
> Create a publication that publishes all changes for all the tables
> present in production schema:
> CREATE PUBLICATION production_publication FOR ALL TABLES SCHEMA production;
>
> Should it be FOR TABLES IN SCHEMA instead of FOR ALL TABLES SCHEMA?


> Create a publication that publishes all changes for all the tables
> present in marketing and sales schemas:
> CREATE PUBLICATION sales_publication FOR ALL TABLES SCHEMA marketing,
> sales;
>
> Add some schemas to the publication:
> ALTER PUBLICATION sales_publication ADD SCHEMA marketing_june, sales_june;
>
> As per current implementation this command fails even if one of the
schemas does not
exist. I think this is counterintuitive, it should throw a warning and
continue adding the rest.


> Drop some schema from the publication:
> ALTER PUBLICATION production_quarterly_publication DROP SCHEMA
> production_july;
>
> Same for drop schema, if one of these schemas does not exist in
publication,
the entire DROP operation is aborted.

Thank you,
Rahila Syed