使用内部联接更新sql表

Question

i'm trying to update my sql table using inner join. I have 2 tables: users and warnings

So i want to update my users table and set value 'yes' to filed users.awarn where users.id_level = '3' and inner join table warnings using id and check if warnings.active = 'yes'

bellow is my command:

UPDATE users
SET    users.awarn = 'yes'
INNER JOIN warnings
ON users.id = warnings.userid
WHERE users.id_level = '3'
AND warnings.active = 'yes'

but phpmyadmin return syntax error. Thanks in advance!

Answer 1

This is the correct syntax for MySQL:

UPDATE users INNER JOIN
       warnings
       ON users.id = warnings.userid
    SET users.awarn = 'yes'
    WHERE users.id_level = '3' AND warnings.active = 'yes';

Answer 2

Your order of operation is wrong SET has to come after JOIN so:

UPDATE users
INNER JOIN warnings
        ON users.id = warnings.userid
SET  users.awarn = 'yes'
WHERE users.id_level = '3'
AND warnings.active = 'yes'