| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
| Cc: | Danny Shemesh <dany74q(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
| Subject: | Re: Expr. extended stats are skipped with equality operator |
| Date: | 2022-08-05 18:08:18 |
| Message-ID: | 2330.1659722898@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> A reproducer for this:
> CREATE TABLE t1(x int[], y float);
> INSERT INTO t1 SELECT array[1], a FROM generate_series(1,99)a;
> CREATE STATISTICS s2 ON (CASE x[1] WHEN 1 THEN true ELSE false END), y FROM t1;
> ANALYZE t1;
> explain analyze SELECT * FROM t1 WHERE CASE x[1] WHEN 1 THEN true ELSE false END AND y=1;
> ERROR: unknown clause type: 134
Sigh ... this is just horrid. I think I see what to do about it though,
and since Tomas seems to have been AWOL for awhile now, I don't think
we'll get a fix by Monday if we wait for him. I'll take a shot at
fixing it; it seems unlikely that I can make it worse.
regards, tom lane
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