Hi,
PostgreSQL constantly crashes on this query:
select dategrid, category, sum(cnt) from v_crime_grid group by dategrid,
category;
Where v_crime_grid is a materialized view, have columns "dategrid" int4,
"category" int4, and "cnt" int8.
Version is:
PostgreSQL 10.0 on x86_64-pc-linux-gnu, comp
ok, I just avoided it using sum(cnt::int) since cnt is small.
2017-11-15 00:25, Tom Lane:
> Dingyuan Wang writes:
>> PostgreSQL 10.0 on x86_64-pc-linux-gnu, compiled by gcc (Debian 7.2.0-8)
>> 7.2.0, 64-bit
>>
>> (gdb) bt
>> #0 int8_avg_combine (fcinfo=0x5
Hi,
I have a table named "gps", with an indexed column "packettime", which
has unix timestamps.
The following query:
select * from gps where packettime < extract(epoch from '2017-05-01
08:00+08'::timestamp with time zone)
explains to:
Seq Scan on gps (cost=0.00..43411860.64 rows=384325803 wid
