Converting a Julian Date

I had to accomplish this at work yesterday. I did not see anything in the pre-defined SQL Server functions that would do it, so I started Googleing. Thank goodness for stackoverflow.com.


DECLARE @JULIAN_DATE INT = 2012146

SELECT DATEADD(D, CAST(SUBSTRING(
CAST(@JULIAN_DATE AS VARCHAR), 5, LEN(@JULIAN_DATE) - 4) AS INT) - 1,
        CAST('1/1/' + SUBSTRING(CAST(@JULIAN_DATE AS VARCHAR),1,4) AS DATE))
AS [NEW DATE]
     
http://stackoverflow.com/questions/2692361/most-concise-way-to-convert-julian-date-yyyyday-of-year-to-sql-datetime

This T-SQL is a little too verbose to be writing over and over again so later today I'm going to roll it up into a UDF (User Defined Function).

Modifying Data Through a View

The following requirements MUST be met to modify data through a view in SQL Server:

• The modification can reference exactly ONE table
• Columns in the view must reference columns in a table directly
• The column cannot be derived from an aggregate
• The column cannot be computed as the result of a UNION/UNION ALL, INTERSECT, EXCEPT, or CROSSJOIN
• The column being modified cannot be affected by the DISTINCT, GROUP BY, or HAVING clause
• The TOP operator cannot be used