| From: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
|---|---|
| To: | Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec> |
| Cc: | Zhihong Yu <zyu(at)yugabyte(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Crash in BRIN minmax-multi indexes |
| Date: | 2021-04-04 18:01:52 |
| Message-ID: | b0e6d18c-9cd4-6639-271e-71c211b32ed8@enterprisedb.com |
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| Lists: | pgsql-hackers |
BTW, for the inet data type, I considered simply calling the "minus"
function, but that does not work because of this strange behavior:
int4=# select '10.1.1.102/32'::inet > '10.1.1.142/24'::inet;
?column?
----------
t
(1 row)
int4=# select '10.1.1.102/32'::inet - '10.1.1.142/24'::inet;
?column?
----------
-40
(1 row)
That is, (a>b) but then (a-b) < 0. AFAICS it's due to comparator
considering the mask, while the minus ignores it. I find it a bit
strange, but I assume it's intentional.
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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