attached image pointers regarding querying a table - sql

Question

Please have a look at the image link to understand my scribbling in the question.
A table has users from different states of Australia who used different methods to approach the application.
This table has column for userids [id](1,2,3,4,5,6..14000), column approaches (a,b,c,d,e,f) and column states (wa,vic..)
Now I need to formulate a table which would have columns with column#1 as approaches and remaining column names with states names like westernaustralia, victoria, SA,queensland etc.
The approach 'a' row would have total no of people who used this approach in different states victoria 5 wa 0
And in the same way other 5 approaches would have number of people used the approach in different states(in columns).
(eg: approach 'b' row- vic 3 wa 1 sa2...etc)
Here's the link for the image please have a look at it .https://i.stack.imgur.com/DldhT.png

Answer 1

you can use a PIVOT statement like below.
create table data (id int, [state] nvarchar(100), approaches nvarchar(10));
insert into data values
(1,'nsw','a'),
(2,'','b'),
(3,'wa','c'),
(4,'qld','d');
select
approaches,
[New South Wales]=[nsw],
[Western Australia]=[wa],
[Queensland]=[qld],
[Victoria]=[vic],
[South Australia]=[sa],
[not available]
from
(
select
id,
case
when [state] ='' then 'not available'
else [state]
end as [state],
approaches
from data
)src
pivot
(
count(id) for [state] in ([nsw],[wa],[qld],[vic],[sa],[not available])
)p
see working demo