Hi. Thanks for your response.
Robert Haas wrote:
>
> Join Filter: ((events_events.transactionid)::text =
> (customerdetails.transactionid)::text)
>
> Now why is there a cast to text there on both sides? Do those two
> columns have exactly the same datatype? If not, you probably want to
> fix that, as it can make a big difference.
>
Good question. I seem not able to get rid of that, even though these are
same type:
=# \d events_events
Table "public.events_events"
Column | Type | Modifiers
----------------------+--------------------------+----------
[snip]
transactionid | character varying(36) | not null
[snip]
=# \d events_eventdetails
Table "public.events_eventdetails"
Column | Type | Modifiers
---------------+------------------------+----------
[snip]
transactionid | character varying(36) | not null
[snip]
(These columns allowing null or not is just something I've been playing with
to no avail too.)
Robert Haas wrote:
>
> Also, how many rows are there in events_events and how many in
> events_eventdetails?
>
select count(*) from events_events; --> 3910163
select count(*) from events_eventdetails; --> 30216033
select count(*) from events_eventdetails_customer_id; (single partition) -->
2976101
--
View this message in context:
http://postgresql.1045698.n5.nabble.com/Performance-trouble-finding-records-through-related-records-tp3405914p3413801.html
Sent from the PostgreSQL - performance mailing list archive at Nabble.com.
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
