Re: [Proposal] Allow users to specify multiple tables in VACUUM commands

On Wed, Aug 30, 2017 at 4:08 PM, Bossart, Nathan <bossartn@amazon.com>
wrote:

> On 8/30/17, 5:37 PM, "Michael Paquier" <michael.paquier@gmail.com> wrote:
> > Yeah... Each approach has its cost and its advantages. It may be
> > better to wait for more opinions, no many people have complained yet
> > that for example a list of columns using twice the same one fails.
>
> Sounds good to me.
>
> > +VACUUM [ FULL ] [ FREEZE ] [ VERBOSE ] [ <replaceable
> > class="PARAMETER">table_name</replaceable> ] [, ...]
> > I just noticed that... But regarding the docs, I think that you have
> > misplaced the position of "[, ...]", which should be inside the
> > table_name portion in the case of what I quote here, no?
>
> I think that's what I had initially, but it was changed somewhere along
> the line.  It is a little more complicated for the versions that accept
> column lists.
>
> VACUUM ... ANALYZE [ [ table_name [ (column_name [, ...] ) ] ] [, ...] ]
>
> ISTM that we need the extra brackets here to clarify that the table and
> column list combination is what can be provided in a list.  Does that
> make sense?  Or do you think we can omit the outermost brackets here?
>

​Inspired by the syntax documentation for EXPLAIN:

​VACUUM [ ( option [, ...] ) ] [ table_def [, ...] ]

where option can be one of:
    FULL
    FREEZE
    VERBOSE
    DISABLE_PAGE_SKIPPING

and where table_def is:
    table_name [ ( column_name [, ... ] ) ]

David J.