Add functions `PERIOD_ADD` and `PERIOD_DIFF`.#933

Merged

dai-chen merged 2 commits intoopensearch-project:2.xfrom Bit-Quill:integ-datetime-period-functions

Oct 28, 2022

+488-147

Commits on Oct 21, 2022

Add functions PERIOD_ADD and PERIOD_DIFF.
Yury-Fridlyand
committed

Commits on Oct 28, 2022

Update signature - use INT instead of LONG.
Yury-Fridlyand
committed