| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
| Cc: | Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: PoC/WIP: Extended statistics on expressions |
| Date: | 2021-08-16 01:31:01 |
| Message-ID: | 20210816013101.GR10479@telsasoft.com |
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| Lists: | pgsql-hackers |
On 1/22/21 5:01 AM, Justin Pryzby wrote:
> > In any case, why are there so many parentheses ?
On Fri, Jan 22, 2021 at 02:09:04PM +0100, Tomas Vondra wrote:
> That's a bug in pg_get_statisticsobj_worker, probably. It shouldn't be
> adding extra parentheses, on top of what deparse_expression_pretty does.
> Will fix.
The extra parens are still here - is it intended ?
postgres=# CREATE STATISTICS s ON i, (1+i), (2+i) FROM t;
CREATE STATISTICS
postgres=# \d t
Table "public.t"
Column | Type | Collation | Nullable | Default
--------+---------+-----------+----------+---------
i | integer | | |
Statistics objects:
"public"."s" ON i, ((1 + i)), ((2 + i)) FROM t
--
Justin
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