Question

I have a table with the following columns

id
parent_id
title
description
weight

every row belongs to a parent. every row has a weight that determines its order on the parent page.
Every time a new row is added I want the weight of that new row to be equal to the largest weight for that parent id +1.

Is there a way to do it within the insert query?

Answer 1

Try this, i’m not sure it will work as i don’t have a sql server on hand. But i beleve i have done something like this before.

INSERT INTO table (id, parent_id, title, description, weight) 
VALUES (2,1,'title', 'description', 1+(SELECT MAX(weight) FROM table))

Replace table with your table name and the values with the ones you need, ofcourse.