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node18 avatar image
node18 asked

Group days by week sql server ssrs

I want to group dates by week. I currently have to functions: The first of which returns all fiscal weeks of the year and the second all the dates. I do a left outer join on the Fiscal weeks from the days to get this result set.
 4/4/2010    4/4/2010 
 NULL        5/4/2010 
 NULL        6/4/2010 
 ...
 11/4/2010   11/4/2010
 NULL        12/4/2010 
In SSRS, I want to group the days by weeek, so I need to have the Null values having the fiscal week that the dates are part of, any ideas of how to do this?
sql-server-2005sqlssrs
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Fatherjack avatar image
Fatherjack answered
Have you tried the WEEK parameter in the Datepart function to provide data for the cell in the report? Using that should then give you a value you can group on... [ http://msdn.microsoft.com/en-us/library/ms174420.aspx][1] [1]: http://msdn.microsoft.com/en-us/library/ms174420.aspx
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node18 avatar image node18 commented ·
Thanks, I wasn't aware of all the date functions, but it provides a good mechanism to solve the problem.
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Henrik Staun Poulsen avatar image
Henrik Staun Poulsen answered
I prefer to have a Calendar table, that I do an inner join to. This table can have all the fields I need for first day of month, year number, day number etc. Joe Celco used to have an example somewhere. Here is another example [of a good calendar by Dan Guzman][1] [1]: http://weblogs.sqlteam.com/dang/archive/2010/07/19/calendar-table-and-datetime-functions.aspx
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Henrik Staun Poulsen avatar image Henrik Staun Poulsen commented ·
@Fatherjack; it normally starts with one report, then you go for a cup of coffee, and when you come back, it is used in many places.
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Fatherjack avatar image Fatherjack ♦♦ commented ·
@Henrik, a great alternative.
I generally only create a calendar table if there are lots of processes that would need it, simply to justify its existence. If its just a one off report it would get the altered TSQL option from me.
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node18 avatar image node18 commented ·
Thanks for your input, I will start doing such things as my skills improve.
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