MySQL Insert & Joins

Question

i saw this

In MySQL, joins work for INSERT, UPDATE, and DELETE statements. It\'s possible to change data in more than one table when joining ta

Answer 1

To complete the set, here's one for DELETE. This is a common method for deleting rows together with their dependencies without triggers.

DELETE users, comments
FROM users JOIN comments ON comments.author=users.id
WHERE users.isspammer=1

Answer 2

You can INSERT ... SELECT with mysql, which is probably what they mean. For example:

INSERT INTO tableNew (col1, col2)
  SELECT tbl1.col1, tbl2.col2
  FROM tbl1 JOIN tbl2

Answer 3

You can do this for Update statement like this,

Update C
Join tableB B on B.id=C.bid
Join tableA A on A.id=B.aid
Set C.status='Active',
A.status='Active'
Where A.id=1 or A.id=2 or A.id=3

check this for your reference.

http://www.siusic.com/wphchen/mysql-update-statement-159.html

http://www.keithjbrown.co.uk/vworks/mysql/mysql_p5.php