Arup Rakshit wrote
> I have a below table :
>
> yelloday_development=# select id,workplace_ids,team_ids from
> reporting_groups ;
>
>
> id | workplace_ids | team_ids
> ----+---------------+----------
> 2 | {} | {}
> 3 | {} | {}
> 1 | {} | {}
> 4 | {1} | {1}
> 5 | {2} | {2,3,4}
> (5 rows)
>
> yelloday_development=# select id from reporting_groups where 2 = ANY
> (team_ids)
> yelloday_development-# ;
> id
> ----
> 5
> (1 row)
>
> How would I select rows which has empty array for the field "team_ids" ?
The generic way would be to checks its length:
WHERE array_length(team_ids, 1) = 0
you could also check for equality with the empty array:
WHERE teams_ids = array[]::integer[]
David J.
--
View this message in context:
http://postgresql.1045698.n5.nabble.com/How-to-select-rows-for-which-column-has-empty-array-tp5806338p5806343.html
Sent from the PostgreSQL - general mailing list archive at Nabble.com.
