T-SQL Date to Julian Conversion

Using T-SQL how can a date field (mm/dd/yyyy) be converted to a Julian Day Number?
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Scott PletcherSenior DBACommented:
Try this:

SET @date = '2003-11-25'

SET @julDate = YEAR(@date) * 1000 +
      DATEDIFF(DAY, CAST(YEAR(@date) AS CHAR(4)) + '-01-01', @date) + 1

SELECT @julDate

Didn't know if you wanted if YYDDD or YYYYDDD, so used YYYY.
Hi jlindeman,

Declare @jd int
set @Jd = Year(@date) * 1000 + Datepart(dy,@date)

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Microsoft SQL Server

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