Question

how can I get a total count of sheets per change of sheet

example:

select sheetID,
       ..
from SomeTable

results look something like this:

sheetID
-----------
1000
1000
1000
1000
3000
3000
3000

so I want something like this:

select sheetID,
       count(sheetID) as TotalsheetCount
from SomeTable

I just don’t know how to break the count up per change of sheetID.

So I’d end up with this essentially:

sheetID   TotalsheetCount
--------  -----------
1000          4
1000          4
1000          4
1000          4
3000          3
3000          3
3000          3

so 4 is because there are 4 1000s, 3 because there are 3 3000s. I am wanting to repeat the total count for that sheetID for each row, even though it’s repeating, I want to provide that.

UPDATE, here’s what I did per the replies but I’m getting way too many results now as compoared to the count where I did not add that partition count before

   select MainTable.sheetID,
           COUNT(SomeTable.sheetID)OVER(PARTITION BY SomeTable.sheetID) AS TotalSheetCount
           table2.SomeField1,
           table2.SomeField1
    from MainTable
        join (select distinct Sales.SalesKey from SomeLongTableName_Sales) sales on sales.SheetKey = MainTable.sheetKey
        left outer join Site on MainTable.SiteKey = Site.SiteKey
        join Calendar on sales.Date >= Calendar.StartDate
             and sales.Date < Calendar.EndDate
        group by SomeTable.sheetID

the joins and stuff is more realistic to my real query but formatted for this post to hide real field and table names.

Answer 1

You probably want to use a GROUP BY:

SELECT sheetID,  COUNT(sheetID) AS TotalsheetCount
FROM dbo.SomeTable
GROUP BY sheetID

I am wanting to repeat the total count for that sheetID for each row,
even though it’s repeating, I want to provide that

If you’re using at least SQL-Server 2005, you can use a CTE with COUNT + OVER-clause, otherwise use a sub-query:

WITH CTE AS
(
   SELECT sheetID,  
      COUNT(sheetID)OVER(PARTITION BY sheetID) AS TotalsheetCount
   FROM SomeTable
)
SELECT sheetID, TotalsheetCount FROM CTE