From: | Joe Conway <mail(at)joeconway(dot)com> |
---|---|
To: | Harry Broomhall <harry(dot)broomhall(at)uk(dot)easynet(dot)net> |
Cc: | pgsql-novice(at)postgresql(dot)org |
Subject: | Re: Problems with arrays |
Date: | 2003-07-07 21:38:42 |
Message-ID: | 3F09E862.4030400@joeconway.com |
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Thread: | |
Lists: | pgsql-novice |
Harry Broomhall wrote:
>>swipe2test=> create table test_arr (id integer, ratecardlist integer[]);
>>CREATE TABLE
>>swipe2test=> insert into test_arr (id) values (1);
>>INSERT 183981491 1
>>swipe2test=> select * from test_arr;
>> id | ratecardlist
>>----+--------------
>> 1 | (null)
>>(1 row)
>>
>>swipe2test=> update test_arr set ratecardlist[1:3] = '{3,4,5}' where id = 1;
>>UPDATE 1
While perhaps misleading, the answer is correct. You are appending array
elements to a NULL array, so the answer should be null. I think what you
really want here is:
regression=# update test_arr set ratecardlist = '{3,4,5}' where id = 1;
UPDATE 1
regression=# select * from test_arr;
id | ratecardlist
----+--------------
1 | {3,4,5}
(1 row)
This actually replaces the NULL array instead of appending to it.
HTH,
Joe
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