MySQL - Update values based on subquery

Question

let's say I have select, which return me from table1:

ID  Name
 1  Bob
 2  Alice
 3  Joe

Then I want UPDATE values in another table based on this result:

UPDATE table2 SET Name = table1.Name WHERE ID = table1.ID

As I understood, I can only do internal select in one place, like:

UPDATE table2 SET Name = (select Name from table1) WHERE ...

And I don't know how to specify WHERE-condition.

Answer 1

all you should do is just join the tables like this.

UPDATE table2 t2
JOIN table1 t1 ON t1.id = t2.id
SET t2.name = t1.name;

RESULTS WITH JOIN

if you are set on doing it with a select you could do it like this.

UPDATE table2 t2,
(   SELECT Name, id 
    FROM table1 
) t1
SET t2.name = t1.name
WHERE t1.id = t2.id

RESULTS FROM SELECT