15.2.1.DATEDIF(Start date, End date, Interval): calculating Time between Two Dates |
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Interval "d" means Days |
Interval "m" means Months |
Interval "y" means Years |
Interval "yd" means If the two dates are in the same year |
Interval "ym" means If the two dates are in the same year |
Interval "md" means If the two dates are in the same month and year |