Making changes to multiple records based on change of single record with SQL

Question

I have a table of food items. They have a \"Position\" field that represents the order they should appear in on a list (listID is the list they are on, we don\'t want to re-

Answer 1

I do not think this can be conveniently done in less than two queries, which is OK, there should be as few queries as possible, but not at any cost. The two queries would be like (based on what you write yourself)

UPDATE mytable SET position = 1 WHERE listID = 1 AND name = 'pears';
UPDATE mytable SET position = position + 1 WHERE listID = 1 AND position BETWEEN 2 AND 4;