You could probably do it with the PIVOT function, but I prefer the old school method:
SELECT
dy,
MAX(CASE WHEN period = 1 THEN subj ELSE NULL END) AS P1,
MAX(CASE WHEN period = 2 THEN subj ELSE NULL END) AS P2,
MAX(CASE WHEN period = 3 THEN subj ELSE NULL END) AS P3,
MAX(CASE WHEN period = 4 THEN subj ELSE NULL END) AS P4,
MAX(CASE WHEN period = 5 THEN subj ELSE NULL END) AS P5,
MAX(CASE WHEN period = 6 THEN subj ELSE NULL END) AS P6,
MAX(CASE WHEN period = 7 THEN subj ELSE NULL END) AS P7
FROM
Classes
GROUP BY
dy
ORDER BY
CASE dy
WHEN 'Mon' THEN 1
WHEN 'Tue' THEN 2
WHEN 'Wed' THEN 3
WHEN 'Thu' THEN 4
WHEN 'Fri' THEN 5
WHEN 'Sat' THEN 6
WHEN 'Sun' THEN 7
ELSE 8
END
- I changed some column names to avoid reserved words