Re: simple query running for ever

På onsdag 17. juni 2020 kl. 00:05:26, skrev Justin Pryzby <pryzby(at)telsasoft(dot)com
<mailto:pryzby(at)telsasoft(dot)com>>:
On Tue, Jun 16, 2020 at 08:35:31PM +0000, Nagaraj Raj wrote:
> I wrote a simple query, and it is taking too long, not sure what is wrong
in it, even its not giving EXPLAIN ANALYZE.
>
> select T0."physical_address_sid", T0."individual_entity_proxy_id",
T2."infrrd_hh_rank_nbr"
> from "cms_prospects".PROSPECT T0
> --inner join "sas_prs_tmp".DEDUPE3583E3F18 T1 on
T0."individual_entity_proxy_id" = T1."individual_entity_proxy_id"
> left join "cms_prospects".INDIVIDUAL_DEMOGRAPHIC T2 on
T0."individual_entity_proxy_id" = T2."individual_entity_proxy_id"

Pardon me for saying so, but this query seems silly.

It's self-joining a table on its PK, which I don't think could ever be useful.

Where is the self-join?

--
Andreas Joseph Krogh