Re: How can I select rows by comparing an array data type column with multiple values ? - Mailing list pgsql-general
| From | Arup Rakshit |
|---|---|
| Subject | Re: How can I select rows by comparing an array data type column with multiple values ? |
| Date | |
| Msg-id | 1401863616.75598.YahooMailNeo@web193906.mail.sg3.yahoo.com Whole thread Raw |
| In response to | Re: How can I select rows by comparing an array data type column with multiple values ? (Arup Rakshit <aruprakshit@rocketmail.com>) |
| Responses |
Re: How can I select rows by comparing an array data type column with multiple values ?
|
| List | pgsql-general |
Just to help you guys the error - here is the full error stack . I am using an ORM with Rails
2.1.0 :001 > ReportingGroup.where("ARRAY[?] && workplace_ids", Workplace.select(:id))
(0.4ms) SELECT COUNT("workplaces"."id") FROM "workplaces"
D, [2014-06-04T12:00:23.479024 #14429] DEBUG -- : (0.4ms) SELECT COUNT("workplaces"."id") FROM "workplaces"
Workplace Load (0.2ms) SELECT id FROM "workplaces"
D, [2014-06-04T12:00:23.479496 #14429] DEBUG -- : Workplace Load (0.2ms) SELECT id FROM "workplaces"
ReportingGroup Load (0.9ms) SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[1,2] && workplace_ids)
D, [2014-06-04T12:00:23.560772 #14429] DEBUG -- : ReportingGroup Load (0.9ms) SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[1,2] && workplace_ids)
=> #<ActiveRecord::Relation [#<ReportingGroup id: 5, created_at: "2014-06-03 12:06:40", updated_at: "2014-06-03 12:06:40", company_id: nil, name: "test123", owner_id: nil, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, cover_image_file_name: nil, cover_image_content_type: nil, cover_image_file_size: nil, cover_image_updated_at: nil, team_ids: [], reporting_group_ids: [], workplace_ids: [2]>, #<ReportingGroup id: 4, created_at: "2014-06-02 11:55:03", updated_at: "2014-06-04 05:56:20", company_id: nil, name: "biz", owner_id: nil, logo_file_name: nil, logo_content_type: nil, logo_file_size: nil, logo_updated_at: nil, cover_image_file_name: nil, cover_image_content_type: nil, cover_image_file_size: nil, cover_image_updated_at: nil, team_ids: [1], reporting_group_ids: [], workplace_ids: [1]>]>
2.1.0 :002 > ReportingGroup.where("ARRAY[?] && workplace_ids", [])
ReportingGroup Load (0.6ms) SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workplace_ids)
D, [2014-06-04T12:00:30.264431 #14429] DEBUG -- : ReportingGroup Load (0.6ms) SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workplace_ids)
PG::UndefinedFunction: ERROR: operator does not exist: text[] && integer[]
LINE 1: ...ps".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workpla...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
: SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workplace_ids)
E, [2014-06-04T12:00:30.264546 #14429] ERROR -- : PG::UndefinedFunction: ERROR: operator does not exist: text[] && integer[]
LINE 1: ...ps".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workpla...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
: SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workplace_ids)
ActiveRecord::StatementInvalid: PG::UndefinedFunction: ERROR: operator does not exist: text[] && integer[]
LINE 1: ...ps".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workpla...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
: SELECT "reporting_groups".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workplace_ids)
Regards,
Arup Rakshit
Arup Rakshit
On Wednesday, 4 June 2014 11:55 AM, Arup Rakshit <aruprakshit@rocketmail.com> wrote:
Hi,
Suppose I have a table
CREATE TABLE sal_emp (
name text,
pay_by_quarter integer[],
);
Now I have a query -
select * from sal_emp where pay_by_quarter && some_var
Now some var some times is fully empty, then I am getting error as
PG::UndefinedFunction: ERROR: operator does not exist: text[] && integer[]
LINE 1: ...ps".* FROM "reporting_groups" WHERE (ARRAY[NULL] && workpla...
^
How to fix this ? The error is taken from production and the example I gave above is the same as per our current query in production.
Regards,
Arup Rakshit
Arup Rakshit
On Monday, 2 June 2014 9:04 PM, Steve Crawford <scrawford@pinpointresearch.com> wrote:
On 06/02/2014 03:54 AM, Arup Rakshit wrote:
Hi,Suppose, I have a table as below :-id | title | content | tags----+--------------+----------------+-------------------1 | sample post | lorem ipsum | {apple,orange}2 | another post | fruits are bad | {apple,hamburger}3 | third post | foo bar | { banana, lemon }4 | third post | foo baz | { watermelon, lemon }Now I want to select all rows, for which tags will having either one or all value from the this array [apple,banana] ? how should I write the query using such a set ?output should select 1,2,3.Regards,
Arup Rakshit
Perhaps the && (overlaps) operator will work best for you. Check out the available operators at:
http://www.postgresql.org/docs/current/static/functions-array.html
Cheers,
Steve
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