Re: Possible to UPDATE array[] columns?

2009/10/30 Blake Starkenburg <blake@oldride.com>:
> Using SQL is it possible to UPDATE (append) onto an array[] column. For
> example say I have a column named "scores int[]".
>
> ID  | scores
> 2   | {54,14,21,8}
> 3   | {12,0,7}
>
> Now I want to append the score of 12 on row:ID 2 so the new scores would
> read {54,14,21,8,12}. I thought maybe simply leaving the array key empty
> would auto-append "UPDATE table set scores[] = 12 WHERE id = 2", not so....
>
> Thanks!
>

postgres=# create table foo(a int[]);
CREATE TABLE
postgres=# insert into foo values('{}');
INSERT 0 1
postgres=# update foo set a = a || 10;
UPDATE 1
postgres=# update foo set a = a || 20;
UPDATE 1
postgres=# update foo set a = a || 30;
UPDATE 1
postgres=# select * from foo;
     a
------------
 {10,20,30}
(1 row)

regards
Pavel Stehule
>
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