Oracle UPDATE JOIN Guide

In Oracle, you can use the UPDATE statement and JOIN clause to perform operations that update data by linking tables. Specifically, you can specify the table to be updated by using the FROM clause in the UPDATE statement, and specify the conditions for linking with the JOIN clause in the FROM clause.

For example, here is a simple illustration:

UPDATE table1
SET table1.column1 = 'new_value'
FROM table1
JOIN table2 ON table1.id = table2.id
WHERE table2.column2 = 'condition';

In this example, we are updating the value of the column1 field in table1, where the updating condition is that the id field in table1 is equal to the id field in table2, and the column2 field in table2 meets the condition ‘condition’.