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Re: Order by and timestamp

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On 3/16/20 1:51 AM, Björn Lundin wrote:


16 mars 2020 kl. 01:41 skrev Tom Lane <tgl@xxxxxxxxxxxxx <mailto:tgl@xxxxxxxxxxxxx>>:

Adrian Klaver <adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@xxxxxxxxxxx>> writes:
On 3/15/20 2:33 PM, Björn Lundin wrote:
I then did ’select * from AMARKETS order by STARTTS’

Is amarkets in more then one schema?

Yeah, it's hard to think of any explanation other than "the query used a
corrupt index on startts to produce the ordering".  But your \d doesn't
show any index on startts.  So maybe there's more than one amarkets
table?

Yes - in other schemas - described in reply to Adrain
But the schema_path does not point to them
And those two other tables are empty


Another possibly-useful bit of evidence is to see what EXPLAIN shows as
the query plan for this query.

bnl=> explain select * from amarkets order by startts;

Can you run as:

explain analyze select * from amarkets order by startts;

                               QUERY PLAN
-----------------------------------------------------------------------
  Sort  (cost=10702.57..10939.29 rows=94691 width=106)
    Sort Key: startts
    ->  Seq Scan on amarkets  (cost=0.00..2875.91 rows=94691 width=106)
(3 rader)

--
Björn Lundin
b.f.lundin@xxxxxxxxx <mailto:b.f.lundin@xxxxxxxxx>






--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx





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