Question

This is my example table:

+-----+----------+------+
| id  | current  | max  |
+-----+----------+------+
| 1   | 20       | 100  |
| 2   | 50       | 50   |
+-----+----------+------+

I am in need of a query that will set the value of a row’s current column to its max column, but I can’t find a way to copy it over. This is my current query:

UPDATE `table` SET `current` = ??? WHERE `id` = 1

What would I replace ??? with to use that column’s value of 100?

Answer 1

Just set it to that column value, using the column name:

UPDATE `table` SET `current` = `max` WHERE `id` = 1