Hi Timo,
thank you for the very quick help.
For everyone who wants to convert the tick format to a date and the duration to hours. The following SQL worked for me:
SELECT
strftime('%Y-%m-%d %H:%M:%S',
"Start" / 10000000 - 62135596800, 'unixepoch') as StartDate,
strftime('%Y-%m-%d %H:%M:%S',
"End" / 10000000 - 62135596800, 'unixepoch') as endDate,
round(Duration * 1.0 / 10000000 / 60 / 60,2) as duration,
*
from
WorkUnits wu