Question

Trying to sort out the correct syntax for this UPDATE:

UPDATE `foo` 
   SET (`x`, `y`, `z`) = (SELECT `x`, `y`, `z` 
                            FROM `bar` 
                           WHERE `id` = 'baz');

In the actual query, there are 165 columns so I very much do not want to have to do x = x for each column.

The columns are not a perfect match so SELECT * is not an option.

Answer 1

In MySQL you can add multiple tables to an UPDATE like this:

UPDATE `foo`, `bar`
SET `foo`.`x` = `bar`.`x`, 
    `foo`.`y` = `bar`.`y`, 
    `foo`.`z` = `bar`.`z`
WHERE `id` = 'baz';