Comments on: Create PostgreSQL Table Partitioning (Part 1)

By: didik prasetyo

didik prasetyo — Tue, 21 Jun 2011 08:40:12 +0000

for this query i have problem if im update with enter grade out of range will error
example im insert
INSERT INTO impressions_by_day(
advertiser_id, “day”, impressions)
VALUES (1234, ’2009-01-02′, 756);

and im update

UPDATE impressions_by_day
SET advertiser_id=1234, day=’2008-01-02′, impressions=756
WHERE day=’2009-01-02′;

then error
ERROR: new row for relation “impressions_by_day_y2009m1ms2″ violates check constraint “impressions_by_day_y2009m1ms2_day_check”
SQL state: 23514

except im upgrade with range day ( NEW.DAY >= DATE ’2009-01-01′ AND NEW.DAY < DATE '2009-03-01' )

how to solution with this case

Thanks

By: JR

JR — Wed, 20 Apr 2011 05:37:01 +0000

Hi Erick,

Glad to hear that you like this article.

You don’t need UPDATE and DELETE triggers, INSERT trigger is enough. You could test it easily, just create test tables, INSERT, UPDATE and DELETE rows. And you can of course use EXPLAIN to see what is happening. :)

By: Erick

Erick — Tue, 19 Apr 2011 19:34:21 +0000

Great, very clear article.

Question: will the INSERT trigger be enough, or do I also need to create similar UPDATE and DELETE triggers?

Thanks