Comments on: Converting to (and from) Julian Date (YYDDD) format in T-SQL https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/ Thu, 07 May 2020 04:34:13 +0000 hourly 1 https://wordpress.org/?v=7.0.4 By: A T-SQL Tip: Working calculations - LobsterPot Blogs https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/#comment-677 Thu, 07 May 2020 04:34:13 +0000 /blogs/robfarley/archive/2009/03/25/converting-to-and-from-julian-format-in-t-sql.aspx#comment-677 […] Back in 2009, I wrote a blog post on Julian (YYDDD) dates. http://blogs.lobsterpot.com.au/2009/03/25/converting-to-and-from-julian-format-in-t-sql/ […]

]]> By: robfarley https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/#comment-676 Thu, 06 Aug 2009 21:56:30 +0000 /blogs/robfarley/archive/2009/03/25/converting-to-and-from-julian-format-in-t-sql.aspx#comment-676 True, but this particular client needed char(5) for other reasons.

]]> By: jason wong https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/#comment-675 Thu, 06 Aug 2009 21:06:08 +0000 /blogs/robfarley/archive/2009/03/25/converting-to-and-from-julian-format-in-t-sql.aspx#comment-675 It’s better to use integer arithematic than string manipulations for performance reasons.

set @standardDate = DATEADD (day , @julianDate%1000-1, DATEADD(year,@julianDate/1000-1900, 0 ) )

]]> By: robfarley https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/#comment-674 Mon, 30 Mar 2009 21:42:55 +0000 /blogs/robfarley/archive/2009/03/25/converting-to-and-from-julian-format-in-t-sql.aspx#comment-674 Matt,

In a leap year, the days from March onwards are one number further. For example, consecutive March 1s might be 08061, 09060.

Rob

]]> By: Matt https://lobsterpot.com.au/blog/2009/03/25/converting-to-and-from-julian-format-in-t-sql/#comment-673 Mon, 30 Mar 2009 09:08:47 +0000 /blogs/robfarley/archive/2009/03/25/converting-to-and-from-julian-format-in-t-sql.aspx#comment-673 How does this account for leap-year in the serial count?

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