Re: [PATCH] Add EXPLAIN (ALL) shorthand

"David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Sat, May 21, 2016 at 10:32 AM, Euler Taveira <euler@timbira.com.br>
> wrote:
>> I wouldn't like a command output controlled by GUC. EXPLAIN is used a
>> lot in bug/performance reports.

> ​And most of the time the choice of options is totally arbitrary based upon
> the mood and experience of the user, so what's it matter if they saved a
> few keystrokes and set the GUC in the .psqlrc​ file?

We've learned repeatedly that GUCs that affect command semantics are
dangerous.  I do not think there's enough justification for that here.
        regards, tom lane