SQL I want to get the following output - sql

Question

I have a sales table
Date_s sales_man product qty
1-Jan-18 xx 01 30
1-Jan-18 xx 01 20
1-Jan-18 xy 01 20
1-Feb-18 xz 02 10
5-Feb-18 xz 02 30
1-Feb-18 xx 01 10
1-Feb-18 xx 01 40
1-Mar-18 xy 03 20
I want to get the following output data format as
Product sales_man Jan Feb Mar
01 xx 50 10 0
01 xy 20 0 0
02 xx 0 0 0
02 xy 0 0 0
02 xz 0 0 0
03 xy 0 0 20

Answer 1

You can use aggregation. Something like this:
select product, salesperson,
sum(case when extract(month from dates) = 1 then qty else 0 end) as jan,
sum(case when extract(month from dates) = 2 then qty else 0 end) as feb
from t
group by product, salesperson;
This uses ANSI SQL date functions, because your database tag is not clear. Date operations can differ by database.
Also, when looking at data by month, typically, you want to take the year into account as well (by filtering or aggregating on the year).

Answer 2

If i got Your problem right, you can try:
SELECT * into #TempTable FROM
(select product, salesman, qty, FORMAT(Dates, 'MMM') as Months from sales
) AS s
PIVOT
(
SUM(qty)
FOR Months in (Jan, Feb)
) AS Pvt
select product, salesman, isnull(Jan, 0) as Jan, isnull(Feb, 0) as Feb from
#TempTable order by product
drop table #TempTable

Answer 3

If you can change your date format from '1-Jan-18' to '1-01-18', then you can do below way
check sql fiddle
http://sqlfiddle.com/#!9/6d3824/2
If you consider below date format
'1-01-18',
'1-01-18',
'1-02-18';
then you can do this query
select product, salesman,
sum(case when extract(month from dates) = 1 then qty else 0 end) as jan,
sum(case when extract(month from dates) = 2 then qty else 0 end) as feb
from sales
group by product, salesman;
Result
product salesman jan feb
1 xx 30 0
1 xz 0 20
2 xy 10 0
For all month
http://sqlfiddle.com/#!9/6d3824/9
for all do query like this,
select product, salesman,
sum(case when extract(month from dates) = 1 then qty else 0 end) as jan,
sum(case when extract(month from dates) = 2 then qty else 0 end) as feb,
sum(case when extract(month from dates) = 3 then qty else 0 end) as mar,
sum(case when extract(month from dates) = 4 then qty else 0 end) as apr,
sum(case when extract(month from dates) = 5 then qty else 0 end) as may,
sum(case when extract(month from dates) = 6 then qty else 0 end) as jun,
sum(case when extract(month from dates) = 7 then qty else 0 end) as jul,
sum(case when extract(month from dates) = 8 then qty else 0 end) as aug,
sum(case when extract(month from dates) = 9 then qty else 0 end) as sep,
sum(case when extract(month from dates) = 10 then qty else 0 end) as oct,
sum(case when extract(month from dates) = 11 then qty else 0 end) as nov,
sum(case when extract(month from dates) = 12 then qty else 0 end) as dece
from sales
group by product, salesman;
Result would be
product salesman jan feb mar apr may jun jul aug sep oct nov dece
1 xx 30 0 0 0 0 0 0 0 0 0 0 0
1 xz 0 20 0 0 0 0 0 0 0 0 0 0
2 xy 10 0 0 0 0 0 0 0 0 0 0 0