DateDiffSQL
Returns an integer value in the same units as the datePart parameter. The return value is the result of subtracting the second date and time from the first date and time. This function behaves the same as the Microsoft SQL function called DATEDIFF.
This function uses the boundary crossing method to calculate the date difference, while the Diff functions (such as DiffDays, DiffMinutes, DiffYears, and so on) use the whole interval method. See Date Functions for more information about using the boundary crossing method versus using the whole interval method.
Syntax
DateDiffSQL(datePart, firstDateTime, secondDateTime, timeZone)
Enabled For
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 |
| Client Expressions | Yes |
| Object Permissions | Yes |
| Services | Yes |
| LDAP | Yes |
| Mobile | Yes |
| Quick Actions (except UI Quick Actions) | Yes |
| UI Quick Actions | Yes |
| Reports | Yes |
| Search/Dashboard without field references | Yes |
| Search/Dashboard with field references | Yes |
Parameters
| Parameter | Description |
|---|---|
|
datePart |
The interval type. Must be surrounded by quotes (" "). The following interval types are supported: millisecond second minute hour day week month quarter year |
|
firstDateTime |
The first date and time to be compared. |
|
secondDateTime |
The second date and time to be compared. |
| timeZone |
(Optional) The time zone, in IANA format. |
Return Value
Number value.
If the firstDateTime parameter is before the secondDateTime parameter, the returned value is positive. If the firstDateTime parameter is after the secondDateTime parameter, the returned value is negative. (This is the opposite of the DateDiff() function.)
Example
To calculate the weekday of a given date within a quick action, you can use:
$(DateDiffSQL("day", "2012-1-1 12:00 AM", ToString(CurrentDate()) % 7) +1)
This results in 1 for Sunday, 2 for Monday, and so on.