pivoting rows to columns in tsql - sql

Question

I have the following table with the following sample data
ID Language Question SubQuestion SubSubQuestion TotalCount TotalPercent
3 E 9 0 1 88527 73%
3 E 9 0 2 19684 16%
3 E 9 0 3 12960 11%
3 E 9 0 9 933 1%
I want all in one row like this
ID Language TotalCount901 TotalPercent901 TotalCount902 TotalPercent902 TotalCount903 TotalPercent903
3 E 88527 73% 19684 16% 12960 11%
I've tired using the pivot command, but it dosnt to work for me.

Answer 1

I made a few assumptions based on your column names, but it looks like you want to use something similar to this. This applies both an UNPIVOT and then a PIVOT to get the values in the columns you requested:
select *
from
(
select id,
language,
col + cast(QUESTION as varchar(10))
+cast(subquestion as varchar(10))
+cast(SubSubQuestion as varchar(10)) col,
value
from
(
select id, language,
cast(TotalCount as varchar(10)) TotalCount,
totalPercent,
question, subquestion, SubSubQuestion
from yourtable
) usrc
unpivot
(
value
for col in (totalcount, totalpercent)
) un
) srcpiv
pivot
(
max(value)
for col in ([TotalCount901], [totalPercent901],
[TotalCount902], [totalPercent902],
[TotalCount903], [totalPercent903],
[TotalCount909], [totalPercent909])
) p
See SQL Fiddle with Demo
Note: when performing the UNPIVOT the columns need to be of the same datatype. If they are not, then you will need to convert/cast to get the datatypes the same.
If you have an unknown number of values to transform, you can use dynamic sql:
DECLARE #query AS NVARCHAR(MAX),
#colsPivot as NVARCHAR(MAX)
select #colsPivot
= STUFF((SELECT ','
+ QUOTENAME(c.name +
cast(QUESTION as varchar(10))
+cast(subquestion as varchar(10))
+cast(SubSubQuestion as varchar(10)))
from yourtable t
cross apply sys.columns as C
where C.object_id = object_id('yourtable') and
C.name in ('TotalCount', 'TotalPercent')
group by c.name, t.question, t.subquestion, t.subsubquestion
order by t.SubSubQuestion
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'select *
from
(
select id,
language,
col + cast(QUESTION as varchar(10))
+cast(subquestion as varchar(10))
+cast(SubSubQuestion as varchar(10)) col,
value
from
(
select id, language,
cast(TotalCount as varchar(10)) TotalCount,
totalPercent,
question, subquestion, SubSubQuestion
from yourtable
) usrc
unpivot
(
value
for col in (totalcount, totalpercent)
) un
) srcpiv
pivot
(
max(value)
for col in (' + #colsPivot + ')
) p '
execute(#query)
See SQL Fiddle with Demo