Re: list of extended statistics on psql

On 2020-Aug-30, Tomas Vondra wrote:

> On Sat, Aug 29, 2020 at 06:43:47PM -0400, Alvaro Herrera wrote:
> > On 2020-Aug-29, Tomas Vondra wrote:

> > > Also, it might be useful to show the size of the statistics built, just
> > > like we show for \d+ etc.
> > 
> > \dX+  I  suppose?
> 
> Right. I've only used \d+ as an example of an existing command showing
> sizes of the objects.

Yeah, I understood it that way too.

How can you measure the size of the stat objects in a query?  Are you
thinking in pg_column_size()?

I wonder how to report that.  Knowing that psql \-commands are not meant
for anything other than human consumption, maybe we can use a format()
string that says "built: %d bytes" when \dX+ is used (for each stat type),
and just "built" when \dX is used.  What do people think about this?

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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