Question

How do I update the entire row with this statement

INSERT INTO table (a,b,c) VALUES (1,2,3)
  ON DUPLICATE KEY UPDATE c=c+1;

But I want to update all fields besides the primary key which auto-increments. How?

Answer 1

Just add them to the second row like this:

INSERT INTO table (a,b,c) VALUES (1,2,3)
  ON DUPLICATE KEY UPDATE c=c+1, b=b+3, ...

On multiple inserts at once, you can refer to the values like this:

INSERT INTO table (a,b,c) VALUES (1,2,3),(4,5,6)
  ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b);

Have look at the Docs for more info on syntax.