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
On Monday, 2 June 2014 9:04 PM, Steve Crawford <scrawf...@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
