Day
Returns the day of the month for a given date, output as an integer between 1 and 31. 【date】The specified date. For example, the number 1 means the date is the 1st day of the month.
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DAY
Returns the day of the month for a given date, output as an integer between 1 and 31. 【date】The specified date. For example, the number 1 means the date is the 1st day of the month.
Usage
DAY(date)
Example
DAY({date of begin})
=> 8

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