CREATE TABLE mahd.student_data(
  school VARCHAR NOT NULL, sex VARCHAR NOT NULL,
  age BIGINT NOT NULL, address VARCHAR NOT NULL,
  famsize VARCHAR NOT NULL, Pstatus VARCHAR NOT NULL,
  Medu BIGINT NOT NULL, Fedu BIGINT NOT NULL,
  Mjob VARCHAR NOT NULL, Fjob VARCHAR NOT NULL,
  reason VARCHAR NOT NULL, guardian VARCHAR NOT NULL,
  traveltime BIGINT NOT NULL, studytime BIGINT NOT NULL,
  failures BIGINT NOT NULL, schoolsup VARCHAR NOT NULL,
  famsup VARCHAR NOT NULL, paid VARCHAR NOT NULL,
  activities VARCHAR NOT NULL, nursery VARCHAR NOT NULL,
  higher VARCHAR NOT NULL, internet VARCHAR NOT NULL,
  romantic VARCHAR NOT NULL, famrel BIGINT NOT NULL,
  freetime BIGINT NOT NULL, goout BIGINT NOT NULL,
  Dalc BIGINT NOT NULL, Walc BIGINT NOT NULL,
  health BIGINT NOT NULL, absences BIGINT NOT NULL,
  G1 BIGINT NOT NULL, G2 BIGINT NOT NULL,
  G3 BIGINT NOT NULL
);