SQL query for showing monthly report

Question

I have a table with following columns

toolid, Quantity, dtfrom, dtto, projectid etc.

We have master tables for tools and project. The tools have license for a particular period say dtfrom is 1/1/2012 and dtto is 30/3/2012.

I have to show monthly report for quantity of tools purchased in a particular month. The report will look like

sno  toolname projectname quantity jan feb mar apr ......

Please help in writing SQL query for it.

Answer 1

in case of any performance issue you can try with PIVOT

select * from (
select sum(quantity) quantity,left(DATENAME(MM, dtfrom),3) month,projectid from test
group by DATENAME(month, dtfrom),projectid
) as p
PIVOT(
  MAX(quantity) for month in ([Jan],[Feb],[Mar],[Apr],[May],[Jun],[Jul],[Aug],[Sep],[Oct],[Nov],[Dec])
)as pvt 

FIDDLE

Answer 2

you have to do something like this:

select 
  sno,
  toolname,
  projectname, 
  year(dtfrom) as year,
  jan=sum(case when month(dtfrom) =1 and month(dtto)=1 then quantity else 0 end),
  feb=sum(case when month(dtfrom) =2 and month(dtto)=2 then quantity else 0 end)
       .....
from <table>
group by toolname,
  projectname,
  dtfrom