1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.userid INNER JOIN smatrix_role ON smatrix_role.id = smatrix_user_role.rolei' at line 1 [ SQL语句 ] : SELECT smatrix_user_role.* FROM `smatrix_user_role` INNER JOIN smatrix_user ON smatrix_user.id = smatrix_user_role.userid INNER JOIN smatrix_role ON smatrix_role.id = smatrix_user_role.roleid