On Wed, Sep 09, 2020 at 09:22:00PM +0900, Michael Paquier wrote:
> On Tue, Sep 08, 2020 at 07:17:58PM -0500, Justin Pryzby wrote:
> > Initially I added List *params, and Michael suggested to retire
> > ReindexStmt->concurrent.  I provided a patch to do so, initially by leaving 
> > int
> > options and then, after this, removing it to "complete the thought", and get
> > rid of the remnants of the "old way" of doing it.  This is also how vacuum 
> > and
> > explain are done.
> > https://www.postgresql.org/message-id/20200902022410.GA20149%40telsasoft.com
> 
> Defining a set of DefElem when parsing and then using the int
> "options" with bitmasks where necessary at the beginning of the
> execution looks like a good balance to me.  This way, you can extend
> the grammar to use things like (verbose = true), etc.

It doesn't need to be extended - defGetBoolean already handles that.  I don't
see what good can come from storing the information in two places in the same
structure.

|postgres=# CLUSTER (VERBOSE on) pg_attribute USING 
pg_attribute_relid_attnum_index ;
|INFO:  clustering "pg_catalog.pg_attribute" using index scan on 
"pg_attribute_relid_attnum_index"
|INFO:  "pg_attribute": found 0 removable, 2968 nonremovable row versions in 55 
pages
|DETAIL:  0 dead row versions cannot be removed yet.
|CPU: user: 0.01 s, system: 0.00 s, elapsed: 0.01 s.
|CLUSTER

-- 
Justin


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