SQL

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;

update with join

   UPDATE
        first_table ft
        JOIN second_table st ON st.some_id = ft.some_id
        JOIN third_table tt  ON tt.some_id = st.some_id
        .....
    SET
        ft.some_column = some_value
    WHERE ft.some_column = 123456 AND st.some_column = 123456

update join sql

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

update with join

update A
  set A.first_name = B.first_name,A.last_name = B.last_name
   from dbo.tblA as A inner join dbo.tblB as B
on A.emp_id = B.emp_id

----

UPDATE A
SET A.<column_name> = B.<column_name>, ...
FROM <table_name> A
[ INNER | LEFT ] JOIN <table_name1> B ON <join_predicate>
[ WHERE Condition(s) ]

update join sql

MySQL:

update ud u
inner join sale s on
    u.id = s.udid
set u.assid = s.assid

----------------
SQL Server:

update u
set u.assid = s.assid
from ud u
    inner join sale s on
        u.id = s.udid
---------------
PostgreSQL:

update ud
  set assid = s.assid
from sale s 
where ud.id = s.udid;