using join tables to update sql code example

Example 1: update with join sql server

UPDATE 
    t1
SET 
    t1.c1 = t2.c2,
    t1.c2 = expression,
    ...   
FROM 
    t1
    [INNER | LEFT] JOIN t2 ON join_predicate
WHERE 
    where_predicate;

Example 2: joins in update query

update a
join b 
on a.a_id=b.b_id 
set b.is_active = 1 
where ....;