We recommend that you use the DateDiffSQLfunction instead of this function. It provides more functionality.
Returns an integer value in the same units as the datePart parameter. The return value is the result of subtracting the first date and time from the second date and time. This function only works for seconds, minutes, hours, and days and does not work for weeks, months, quarters, or years.
This function uses the boundary crossing method to calculate the date difference. See Date Functions for more information about using the boundary crossing method versus using the whole interval method.
DateDiff(datePart, firstDateTime, secondDateTime)
For a description of the business object categories, see Notes on "Enabled For".
|Business Object Category||Yes/No|
|Business Rules: Before-Save Rules||Yes|
|Business Rules: Calculation Rules (After Save, with or without Also Recalculate on Load)||Yes|
|Business Rules: Calculation Rules (Before Save or Always, without Also Recalculate On Load)||Yes|
|Business Rules: Calculation Rules (Before Save or Always, with Recalculate On Load)||Yes|
|Business Rules: Editing Rules||Yes|
|Business Rules: Initialization Rules||Yes|
|Business Rules: Read Only Rules||Yes|
|Business Rules: Required Rules||Yes|
|Business Rules: Validation Rules||Yes|
|Quick Actions (except UI Quick Actions)||Yes|
|UI Quick Actions||Yes|
|Search/Dashboard without field references||Yes|
|Search/Dashboard with field references||Yes|
The interval type. Must be surrounded by quotes (" "). The following interval types are supported:
The first date and time to be compared.
The second date and time to be compared.
If the firstDateTime parameter is later than the secondDateTime parameter, the returned value is positive. If the firstDateTime parameter is earlier than the secondDateTime parameter, the returned value is negative.
To calculate the weekday of a given date within a quick action, you can use:
$(DateDiff("day", ToString(CurrentDate()), "2011-12-31 11:59 PM") % 7)
This results in 1 for Sunday, 2 for Monday, and so on.
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