Pivot multiple columns with a column value repeats for each new column - sql

Question

I need your help to build an sql query/sp for the following output.
My table is with the following data:
I would like to generate output like the following:
Kindly note, here, FieldName are not just four as in the table, it varies.
Find below the data:
CREATE TABLE #Results
(
FieldName nvarchar(50),
FieldValue nvarchar(50),
RecordStaus int
);
INSERT INTO #Results(FieldName,FieldValue,RecordStaus)
VALUES ('Coverage',NULL,1)
,('Premium',NULL,2)
,('F1',100,1)
,('F2',100,1)
,('Coverage',200,1)
,('Premium',10,1)
,('F1',50,1)
,('F2',NULL,3)
,('Coverage',300,1)
,('Premium',45,1)
,('F1',24,1)
,('F2',NULL,1)
,('Coverage',450,3)
,('Premium',12,3)
,('F1',50,1)
,('F2',NULL,1);

Answer 1

You can try this:
CREATE TABLE #Results
(
id int identity(1,1),
FieldName nvarchar(50),
FieldValue nvarchar(50),
RecordStaus int
);
INSERT INTO #Results(FieldName,FieldValue,RecordStaus)
VALUES ('Coverage',NULL,1)
,('Premium',NULL,2)
,('F1',100,1)
,('F2',100,1)
,('Coverage',200,1)
,('Premium',10,1)
,('F1',50,1)
,('F2',NULL,3)
,('Coverage',300,1)
,('Premium',45,1)
,('F1',24,1)
,('F2',NULL,1)
,('Coverage',450,3)
,('Premium',12,3)
,('F1',50,1)
,('F2',NULL,1);
DECLARE #DynamicTSQLStatement NVARCHAR(MAX)
,#Columns NVARCHAR(MAX);
SELECT #Columns = STUFF
(
(
SELECT *
FROM
(
SELECT DISTINCT ',[' + CAST([FieldName] AS NVARCHAR(50)) + ']'
FROM #Results
UNION
SELECT DISTINCT ',[' + CAST([FieldName] + '_RecordStaus' AS NVARCHAR(50)) + ']'
FROM #Results
) DS ([FieldName])
FOR XML PATH(''), TYPE
).value('.', 'VARCHAR(MAX)')
,1
,1
,''
);
SET #DynamicTSQLStatement = N'
SELECT *
FROM
(
SELECT [FieldName]
+ CASE WHEN [Column] = ''RecordStaus'' THEN ''_RecordStaus'' ELSE '''' END AS [FieldName]
,[rowID]
,[Value]
FROM
(
SELECT [FieldName]
,[FieldValue]
,CAST([RecordStaus] AS NVARCHAR(50))
,ROW_NUMBER() OVER (PARTITION BY [FieldName] ORDER BY [id])
FROM #Results
) DS ([FieldName], [FieldValue], [RecordStaus], [rowID])
UNPIVOT
(
[Value] FOR [Column] IN ([FieldValue], [RecordStaus])
) UNPVT
) ReadyForPivot
PIVOT
(
MAX([Value]) FOR [FieldName] IN (' + #Columns +')
) PVT;
';
EXEC sp_executesql #DynamicTSQLStatement;
DROP TABLE #Results;
Few notes:
I have added id column in order to know the value for which row / in your real case you can use ordering by something else or SELECT 1 in the ROW_NUMBER function; you need such way in order to be sure the results are deterministic;
I am using dynamic SQL in order to make the query work for various values of FildName column - if you need specific order of the columns, you can do this using ORDER BY clause in the FOR XML clause. For example:
SELECT #Columns = STUFF
(
(
SELECT *
FROM
(
SELECT DISTINCT ',[' + CAST([FieldName] AS NVARCHAR(50)) + ']'
FROM #Results
UNION
SELECT DISTINCT ',[' + CAST([FieldName] + '_RecordStaus' AS NVARCHAR(50)) + ']'
FROM #Results
) DS ([FieldName])
ORDER BY [FieldName] DESC -- you can order the columns as you like
FOR XML PATH(''), TYPE
).value('.', 'VARCHAR(MAX)')
,1
,1
,''
);
Then add the #columns variable value in the dynamic SQL:
SET #DynamicTSQLStatement = N'
SELECT' + #columns + ' ...