migration script additional point dprpats grading

ALTER TABLE `college_subject_grades`
ADD `additional_point_lab` float NOT NULL,
ADD `additional_point_dec_lab` float NOT NULL AFTER `additional_point_lab`;

ALTER TABLE `college_subject_grades`
ADD `semestral_lec` float NOT NULL,
ADD `semestral_lab` float NOT NULL AFTER `semestral_lec`;

ALTER TABLE `college_subject_grades`
ADD `equivalent_grade_lab` float NOT NULL;

ALTER TABLE `college_subject_grades`
CHANGE `equivalent_grade_lab` `equivalent_grade_lab` varchar(255) NOT NULL AFTER `semestral_lab`;