UPDATE
prc.user,
prc_test.user
SET
prc_test.user.pwd_user = prc.user.pwd_user
WHERE
prc_test.user.name_user = prc.user.name_user
UPDATE
prc.user,
prc_test.user
SET
prc_test.user.pwd_user = prc.user.pwd_user
WHERE
prc_test.user.name_user = prc.user.name_user