use joins to update data in mySQL code example

Example 1: mysql update with join

UPDATE T1, T2,
[INNER JOIN | LEFT JOIN] T1 ON T1.C1 = T2. C1
SET T1.C2 = T2.C2, 
    T2.C3 = expr
WHERE condition

Example 2: join in update query in mysql

UPDATE employees
    LEFT JOIN
    merits ON employees.performance = merits.performance 
SET 
    salary = salary + salary * 0.015
WHERE
    merits.percentage IS NULL;Code language: SQL (Structured Query Language) (sql)