Re: Rationalizing EXPLAIN VERBOSE output

Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > How about?
>
> > EXPLAIN select * from pg_class;
> > EXPLAIN VERBOSE select * from pg_class;
> > EXPLAIN VERBOSE 1 select * from pg_class;
> > EXPLAIN VERBOSE 5 select * from pg_class;
>
> Seems kinda ugly. But maybe same idea with repeated VERBOSE,
> a la some Unix commands ("more -v's get you more detail"):
>
> EXPLAIN [ANALYZE] [VERBOSE] [ VERBOSE ... ] statement;
>
> I'd sugggest
>
> EXPLAIN select * from pg_class;
>
> Default output: same as now
>
> EXPLAIN VERBOSE select * from pg_class;
>
> Add prettyprinted qual clauses
>
> EXPLAIN VERBOSE VERBOSE select * from pg_class;
>
> Add full plan-tree dump
>
> and there's room for expansion if we need it.

I was never a fan of the -v -v more-verbose options, and I don't see any
case where we use such behavior in our code. We do use detail levels
for debug, and that is fairly common.

How about:

> > EXPLAIN select * from pg_class;
> > EXPLAIN VERBOSE select * from pg_class;
> > EXPLAIN LEVEL 1 select * from pg_class;
> > EXPLAIN LEVEL 5 select * from pg_class;

Here I use LEVEL to tell how much detail you want.

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