Subtraction (-)

value_1 - value_2

Behaves differently depending on the argument types. Possible options are listed in the table:

Type of `value_1`	Type of `value_2`	Return value
`Fractional number \| Integer`	`Fractional number \| Integer`	The difference between the numbers `value_1` and `value_2`.
`Date`	`Fractional number \| Integer`	The date that is `value_2` days smaller than `value_1` (rounded down to an integer number of days).
`Datetime`	`Fractional number \| Integer`	The date with time, `value_2` days smaller than `value_1`. If `value_2` contains a fractional part, it is converted to hours (`1/24`), minutes (`1/1440`), and seconds (`1/86400`).
`Date`	`Date`	The difference between two dates in days.
`Any`	`Any`	The difference between two dates in days: the integer part — the number of whole days, the fractional part — the number of hours, minutes and seconds expressed as a fraction of the whole day (1 hour is '1/24').
`Datetime`	`Datetime`	The difference between two dates in days: the integer part — the number of whole days, the fractional part — the number of hours, minutes and seconds expressed as a fraction of the whole day (1 hour is '1/24').

Argument types:

Return type: Depends on argument types

2 - 3 = -1

2 - 0.5 = 1.5

#2019-01-06# - 2 = #2019-01-04#

#2019-01-06# - 2.2 = #2019-01-03#

#2019-01-06 03:00:00# - 2 = #2019-01-04 03:00:00#

#2019-01-06 03:00:00# - 2.5 = #2019-01-03 15:00:00#

#2019-01-06# - #2019-01-02# = 4

#2019-01-06 15:00:00# - #2019-01-02 03:00:00# = 4.5

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