SQL Server: how to form a crosstab - sql

Question

I am using SQL Server 2014.
How can I create a cross-table out of the straight table like the below?
Code here where I try to do the multiple-pivoting.
Sample input
Code here only about the sample data.
GOAL after pivoting and reformatting of the columns by other columns

Answer 1

This logic would work for you:
Create an additional temp table where you store all the possible combinations of Store and City, then left join with your existing table.
From this left join you get the "calculated" string that you will use as a column name (C1_L_xCount, C1_L2_xCount, etc).
Then apply a pivot as below:
select ylabel.colx, ylabel.coly, y.myid, y.week, isnull(y.xCount, 0) xCount, isnull(y.yCount, 0) yCount
into #table
from (
select distinct y3.week, y1.city, y2.store, y1.city + '_' + y2.store + '_xCount' as colx, y1.city + '_' + y2.store + '_yCount' as coly
from #yt y1 cross join #yt y2 cross join #yt y3
) ylabel left join #yt y on y.week = ylabel.week and y.store = ylabel.store and y.city = ylabel.city
select * from #table --this is the additional table, the one used for pivoting
--this is your solution:
select myid
, week
, isnull(C1_L_xCount, 9) C1_L_xCount
, isnull(C1_L2_xCount, 9 ) C1_L2_xCount
, isnull(C2_L_xCount, 0) C2_L_xCount
, isnull(C2_L2_xCount, 0) C2_L2_xCount
, isnull(C1_L_yCount, 0) C1_L_yCount
, isnull(C1_L2_yCount, 0) C1_L2_yCount
, isnull(C2_L_yCount, 0) C2_L_yCount
, isnull(C2_L2_yCount, 0) C2_L2_yCount
from
(
select *
from #table
pivot ( max(xCount) for colx in ( [C1_L_xCount], [C1_L2_xCount],[C2_L_xCount], [C2_L2_xCount])) p
pivot ( max(yCount) for coly in ( [C1_L_yCount], [C1_L2_yCount],[C2_L_yCount], [C2_L2_yCount])) q
where myid is not null
) t
Please check a working demo here.
But, if you need to dynamically add Stores and Cities, you will need to convert this into a dynamic pivot.

Answer 2

We repeat the case such that
CASE WHEN
[City]='C1' AND [Store]='L'
THEN
[xCount]
END
AS 'LC1_xCount',
I changed the valuations a little bit to get more combinations, code here.
or code here:
CREATE TABLE #yt
([MyID] int, [Store] nvarchar(300), [City] nvarchar(300), [Week] int, [xCount] int, [yCount] int)
;
INSERT INTO #yt
([MyID], [Store], [City], [Week], [xCount], [yCount])
VALUES
(1, 'L', 'C1', 1, 96, 7),
(2, 'L', 'C1', 1, 138, 77),
(3, 'L2', 'C1', 1, 37, 744),
(4, 'L', 'C1', 1, 59, 74),
(5, 'L', 'C1', 2, 282,73333),
(6, 'L2', 'C2', 2, 212,7333),
(7, 'L2', 'C2', 2, 78,733),
(8, 'L', 'C2', 2, 97,73),
(9, 'L', 'C2', 3, 60,72222),
(10, 'L2', 'C2', 3, 123,7222),
(11, 'L2', 'C1', 3, 220,722),
(12, 'L2', 'C1', 3, 87,72)
;
select [MyId], [Week], [LC1_xCount], [LC2_xCount], [L2C1_xCount], [L2C2_xCount]
, [LC1_yCount], [LC2_yCount], [L2C1_yCount], [L2C2_yCount]
from
(
select myid, week, store, city, xcount, ycount,
CASE WHEN
[City]='C1' AND [Store]='L'
THEN
[xCount]
END
AS 'LC1_xCount',
CASE WHEN
[City]='C2' AND [Store]='L'
THEN
[xCount]
END
AS 'LC2_xCount',
CASE WHEN
[City]='C1' AND [Store]='L2'
THEN
[xCount]
END
AS 'L2C1_xCount',
CASE WHEN
[City]='C2' AND [Store]='L2'
THEN
[xCount]
END
AS 'L2C2_xCount',
CASE WHEN
[City]='C1' AND [Store]='L'
THEN
[yCount]
END
AS 'LC1_yCount',
CASE WHEN
[City]='C2' AND [Store]='L'
THEN
[yCount]
END
AS 'LC2_yCount',
CASE WHEN
[City]='C1' AND [Store]='L2'
THEN
[yCount]
END
AS 'L2C1_yCount',
CASE WHEN
[City]='C2' AND [Store]='L2'
THEN
[yCount]
END
AS 'L2C2_yCount'
from #yt
GROUP BY myid, week, store,city, xcount, ycount
) src;