I've got data from our third party partner and every date column is coded in this NUMBER(6,0) format:
118346
118347
118348
118351
119013
119035
119049
119051
118339
118353
119019
119028
119029
119031
None of the last 3 digits are more than 365, so I reckon 118339 must mean 2018 + 339 days, which is December 5, 2018: '2018-12-05'. I've never encountered this kind of format before, so I'm a bit helpless how to handle it. Is this some standardized format? Can I use some built-in convert function or should I just manually cut and convert it using some arithmetics?
I would like to sort my rows grouping by weeks, so maybe I shouldn't even convert it, but for some reason I feel converting to a date type would be more elegant. Which approach is the better?
EDIT: I've just checked my excel version of the data, and this format is in fact working as I've imagined. So the question stands.