SELECT
CASE WEEKDAY( datum )
WHEN 0 THEN "radni dan"
WHEN 1 THEN "radni dan"
WHEN 2 THEN "radni dan"
WHEN 3 THEN "radni dan"
WHEN 4 THEN "radni dan"
WHEN 5 THEN 'subota'
WHEN 6 THEN 'nedjelja'
END dan,
sum(TIMESTAMPDIFF(hour,CONVERT(CONCAT((datum) , ' ', odsati),DATETIME) , CONVERT(CONCAT((datum+ INTERVAL 1 DAY) , ' ', dosati),DATETIME)) )as ukupnoSati,
COUNT(*) as ContTip
FROM zaposlenik
WHERE ID = '29021966-33-0132'
GROUP BY dan