How to Pivot on two columns in SQL Server [duplicate] - sql

Question

This question already has an answer here:
TSQL PIVOT MULTIPLE COLUMNS
(1 answer)
Closed 4 years ago.
Below is the data rows I have:
ID Code OtherCol
7 Code1 NULL
7 code2 NULL
2 unk NULL
4 unk NULL
3 Code2 NULL
3 Code3 NULL
3 Code5 Other1
5 Code4 NULL
5 Code5 Other2
I am trying get this displayed as
ID name1 name2 name3 name4 name5 nameunk Othername
2 unk
3 code2 code3 code5 Other1
4 unk
5 code4 code5 Other2
7 code1 code2
I was able to pivot the first column but having a problem pivoting the second one.
And also there is a name for a given code, but the value under OtherCol are random.

Answer 1

I recommend conditional aggregation:
select id,
max(case when code = 'code1' then code end) as name1,
max(case when code = 'code2' then code end) as name2,
max(case when code = 'code3' then code end) as name3,
max(case when code = 'code4' then code end) as name4,
max(case when code = 'code5' then code end) as name5,
max(case when code = 'unk' then code end) as nameunk,
max(othercol) as othercol
from t
group by id;

Answer 2

This is full working example. You can change it a little bit to match your real data.
CREATE TABLE #DataSource
(
[ID] INT
,[Code] VARCHAR(12)
,[OtherCol] VARCHAR(12)
);
INSERT INTO #DataSource ([ID], [Code], [OtherCol])
VALUES (7, 'Code1', NULL)
,(7, 'code2', NULL)
,(2, 'Unk', NULL)
,(4, 'Unk', NULL)
,(3, 'Code2', NULL)
,(3, 'Code3', NULL)
,(3, 'Code5', 'Other1')
,(5, 'Code4', NULL)
,(5, 'Code4', 'Other2');
DECLARE #DynammicTSQLStatement NVARCHAR(MAX)
,#DynamicPIVOTColumns NVARCHAR(MAX);
SET #DynamicPIVOTColumns = STUFF
(
(
SELECT ',[' + CAST([value] AS VARCHAR(12)) + ']'
FROM
(
SELECT 0
,DENSE_RANK() OVER (ORDER BY [Code])
,REPLACE([Code], 'Code', 'name')
FROM #DataSource
WHERE [Code] IS NOT NULL
UNION
SELECT 1
,1
,'OtherCol'
) DS ([GroupID],[RowID], [value])
ORDER BY [GroupID], [RowID]
FOR XML PATH('') ,TYPE
).value('.', 'NVARCHAR(MAX)')
,1
,1
,''
);
SET #DynammicTSQLStatement = N'
SELECT *
FROM
(
SELECT [ID]
,[Code]
,REPLACE([Code], ''Code'', ''name'')
FROM #DataSource
UNION ALL
SELECT [ID]
,[OtherCol]
,''OtherCol''
FROM #DataSource
) DS ([ID], [value], [column])
PIVOT
(
MAX([value]) FOR [column] IN (' + #DynamicPIVOTColumns + ')
) PVT';
EXEC sp_executesql #DynammicTSQLStatement;
DROP TABLE #DataSource;

Answer 3

--PIVOT THE TABLE
select ID,[code1],[code2], [code3],[code4],[code5],[Unk]
into #resPivot
from
(
select ID, code
from tblTest
) src
pivot
(
max(code)
for code in ([code1], [code2], [code3],[code4],[code5],[Unk])
) piv;
--FIND ALL COLS WHERE OTHER COLUMN have value row 3,5 in your example
SELECT * INTO #distinct FROM tblTest where tblTest.otherCol IS NOT NULL
--PIVOTED RESULT WITH ABOVE TABLE
select distinct #resPivot.ID,[code1], [code2], [code3],[code4],[code5],[Unk],#distinct.otherCol
into #otherCol
from #resPivot inner join #distinct
on #distinct.id = #resPivot.id
--THIS IS PIVOTED RESULT WITH ALL RESULTS THAT HAS NO OTHER COL VALUE UNION with OTHER CALL VALUE
select distinct #resPivot.ID,[code1], [code2], [code3],[code4],[code5],[Unk],tblTest.otherCol
from #resPivot inner join tblTest
on tblTest.id = #resPivot.id
WHERE otherCol IS NULL and tblTest.ID NOT IN (SELECT ID FROM #otherCol)
UNION ALL
Select * from #otherCol
--DROP TEMP TABLES
Drop Table #resPivot
Drop Table #distinct
Drop Table #otherCol
A little simpler and faster version