how to update table using values of multiple columns from other tables in Oracle SQL

Question

Do i need to write in PL/SQL or is it possible in SQL query?

Answer 1

yes, simple update statement does this:

UPDATE table_name1 T1
SET (id, name) =
(SELECT T2.id, T2.name
FROM table_name2 T2
WHERE T1.REF = T2.REF)
WHERE EXISTS
(SELECT 1
FROM table_name2 T2
WHERE T1.id = T2.id);