DATEDIFF (Azure Stream Analytics)

 

Updated: April 22, 2016

Applies To: Azure

Returns the count (signed integer) of the specified datepart boundaries crossed between the specified startdate and enddate.

Syntax

DATEDIFF ( datepart , startdate, enddate )  

datepart

Is the part of startdate and enddate that specifies the type boundary crossed. The following table lists all valid datepart arguments.

datepartAbbreviations
yearyy, yyyy
quarterqq, q
monthmm, m
dayofyeardy, y
daydd, d
weekwk, ww
weekdaydw, w
hourhh
minutemi, n
secondss, s
millisecondms
microsecondmcs

startdate

Is an expression that can be resolved to a datetime. date can be an expression, column expression, or string literal. Startdate is substructed from enddate

enddate

Is an expression that can be resolved to a datetime. date can be an expression, column expression, or string literal. Startdate is substructed from enddate

bigint

SELECT DATEDIFF (minute, EntryTime, CAST(’2014-09-10 12:00:00’ AS datetime)) AS DiffTime  
FROM Input TIMESTAMP BY EntryTime  
WHERE Toll > 5  
  

SELECT DATEDIFF (minute, EntryTime, DATEADD(hour,2,EntryTime)) AS DiffTime  
FROM Input TIMESTAMP BY EntryTime  
WHERE Toll > 5  
  

System_CAPS_ICON_note.jpg Note


In Stream Analytics Query Language there is a special use of DATEDIFF function when used inside a JOIN condition. See JOIN (Azure Stream Analytics).

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