SQL query help, ms sql server 2005 (group by and having)

Question

I writing a query within ms sql server 2005 and having some trouble getting it to run. I need my query to include:

1. Include all docs from Date Range 2009-07-20 to 2009-08-04
2. Include a Sum column using the 'Size' field
3. Include a record count column

4. Group By Name

   select Name, count(*) AS FileCount, SUM(Size)
   From alldocs Group by DirName HAVING TimeCreated >= '2009-07-20' AND TimeCreated <= '2009-08-04'

Answer 1

why not

select Name, count(*) AS FileCount, SUM(Size)
From alldocs
WHERE TimeCreated between '2009-07-20' AND '2009-08-04'
Group by DirName

?

Answer 2

Since you're querying on fields that are not aggregates (SUM, COUNT, AVG), you can use a normal WHERE:

SELECT
  DirName, count(*) AS FileCount, SUM(Size)
FROM
  alldocs 
WHERE
  TimeCreated >= '2009-07-20' 
  AND TimeCreated <= '2009-08-04'
GROUP BY
  DirName

You only need the HAVING if you want to limit something based on an aggreate, e.g.

HAVING Count(*) > 5

Marc

PS: If you want to display MB instead of bytes, use this query:

SELECT
  DirName, count(*) AS FileCount, SUM(Size) / (1024*1024) as 'Size MB'
FROM
  alldocs 
WHERE
  TimeCreated >= '2009-07-20' AND TimeCreated <= '2009-08-04'
GROUP BY
  DirName

Answer 3

You should add the Name column to the Group By list.

SELECT Name, count(*) AS FileCount, SUM(Size)
FROM alldocs
WHERE TimeCreated between '2009-07-20' AND '2009-08-04'
GROUP BY Name