What is the method for updating joined tables in Oracle?

To perform a join update operation in Oracle, you can use the UPDATE statement along with the JOIN clause. The specific steps are as follows:

1. Write an UPDATE statement specifying the target table and the fields to be updated.
2. Use the FROM clause to link the target table with the table to be joined, specifying the join conditions.
3. Add conditions in the WHERE clause to restrict the rows being updated.

Here is an example code:

UPDATE target_table t
SET t.column1 = join_table.column1,
    t.column2 = join_table.column2
FROM target_table t
INNER JOIN join_table jt
ON t.join_column = jt.join_column
WHERE t.condition = 'value';

In the example above, target_table is the table that will be updated, join_table is the table to be joined, join_column is the field for the join condition, and condition is the condition for updating the rows. The update operation will update the field values of rows in the target table that meet the condition with the rows in the join table that also meet the condition.