Kyong Kim wrote:
I needed to give greater detail.
parent_id isn't unique. The table has a composite primary key (parent_id,
seq_id).
Here's a better schema def
CREATE TABLE sometable (
parent_id INT(10) NOT NULL,
seq_id INT(10) AUTO_INCREMENT,
child_id INT(10) NULL,
PRIMARY KEY(parent_id, seq_i
I needed to give greater detail.
parent_id isn't unique. The table has a composite primary key (parent_id,
seq_id).
Here's a better schema def
CREATE TABLE sometable (
parent_id INT(10) NOT NULL,
seq_id INT(10) AUTO_INCREMENT,
child_id INT(10) NULL,
PRIMARY KEY(parent_id, seq_id),
UNIQUE KEY(chil
On Tue, Mar 23, 2010 at 11:07 PM, Noel Butler wrote:
> does this list not have a dickhead filter?
>
That's Eternal September for you.
--
Bier met grenadyn
Is als mosterd by den wyn
Sy die't drinkt, is eene kwezel
Hy die't drinkt, is ras een ezel
First, if you want no duplicate parent_id, make it unique key (as JW saids).
Look at INSERT ... ON DUPLICATE KEY UPDATE, I think this will solve the problem
with one statement.
Rodrigo Ferreira
--- On Wed, 3/24/10, Johnny Withers wrote:
From: Johnny Withers
Subject: Re: SELECT and INSERT if
Make parent_id a unique key. Doing a select first and inserting if no
result will work 99.9% of the time; however, consider 2 rows being
inserted at the same time.
JW
On Tuesday, March 23, 2010, Kyong Kim wrote:
> I need to INSERT a row into a table only if it does not exist to
> insure that the
