Update statement help

Question

Hello folks,
I need some help/advise on an UPDATE statement.
I have two tables. I need to join these tables and update a field in table1 with a field from table2.
Please see the attached jpg file.
The first 3 coloumns are from table1 and last 2 columns in the picture are from table2.
I want to update NEXT_RATE_RESET_ADJ_P field (from table1) with NEXT_RESET_DATE_ADJUSTED field (from table2). I want to join them between table1.DEAL_LEG_ID_P and table2.DEAL_LEG_ID.
I have never written update statement with a join in it.
Any help is greatly appreciated.

Answer 1

UPDATE EMP1
SET EMP1.SAL =
(SELECT EMP2.SAL
FROM EMP2
WHERE EMP1.EMPNO = EMP2.EMPNO
AND EMP1.DEPTNO = EMP2.DEPTNO)
WHERE EMP1.JOB = 'SALESMAN';
To avoid setting EMP1.SAL to NULL if there is no matching EMP2 record
UPDATE EMP1
SET EMP1.SAL =
(SELECT EMP2.SAL
FROM EMP2
WHERE EMP1.EMPNO = EMP2.EMPNO
AND EMP1.DEPTNO = EMP2.DEPTNO)
WHERE EMP1.JOB = 'SALESMAN'
AND EXISTS (SELECT NULL
FROM EMP2
WHERE EMP1.EMPNO = EMP2.EMPNO
AND EMP1.DEPTNO = EMP2.DEPTNO);