record in pivot format in sql server - sql

we are using sql server 2008 and data in below format.
and i want to above record in below pivot format.
please help.

select * from PivotEx
pivot
(
avg(avg)
for city in ( [Mumbai] ,[Ahmedabad],[Raikot])
) piv;
To pass the values dynamically in pivot
Declare #cols nvarchar(max)
Declare #query nvarchar(max)
SET #cols = STUFF((SELECT distinct ',' + QUOTENAME(city)
FROM PivotEx
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = ' select * from PivotEx
pivot
(
avg(avg)
for city in (' + #cols + ')
) p '
execute(#query)

Related

Summing multiple dynamically declared variables (fast)

I'm developing a program where I have multiple columns which I need to show the sum of to anEnd-user. These columns are assigned in the table ColumnTest in the column ColumnNames and their names can be changed by the user. Therefore I need to look up all the column names in ColumnTest\ColumnNames and afterwards sum all values regarding these columnnames from the outputtable.
I have previously used this script where I get all the columnnames in #cols like this [col1].[col2].[col3] and so on, but when I try to run the query I'm not able to sum these columns using '+ #cols + '. When I run this I get the following error: The SUM function requires 1 argument(s). Is there a viable option to do this procedure, without compromising the loading-time substantially?
DECLARE
#cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX);
SELECT #cols = STUFF((SELECT distinct ',' + QUOTENAME(c.ColumnNames)
FROM ColumnTest c
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)') ,1,1,'')
set #query =
'
SELECT
ID
,SUM('+ #cols + ')
FROM Output_table
GROUP BY
ID
'
execute(#query);
Try this,
DECLARE
#cols AS NVARCHAR(MAX)='',
#query AS NVARCHAR(MAX);
SELECT #cols += 'SUM('+ColumnNames+') as ['+ColumnNames+'],'
from
(
SELECT distinct ColumnNames FROM ColumnTest
)A
SELECT #cols=LEFT(#cols,LEN(#cols)-1)
set #query =
'
SELECT ID,'+ #cols + '
FROM Output_table
GROUP BY ID
'
execute(#query);
or if you want addition of all column values you can use below query
DECLARE #cols AS NVARCHAR(MAX)='',
#query AS NVARCHAR(MAX);
SELECT #cols += ''+ColumnNames+'+'
FROM
(
SELECT DISTINCT ColumnNames FROM ColumnTest
)A
SELECT #cols=LEFT(#cols,LEN(#cols)-1)
set #query =
'
SELECT ID,SUM('+ #cols + ')
FROM Output_table
GROUP BY ID
'
execute(#query);
You can not use comma separated like ','
You can use '+'
Try this
DECLARE
#cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX);
SELECT #cols = STUFF((SELECT distinct '+' + QUOTENAME(c.ColumnNames)
FROM ColumnTest c
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)') ,1,1,'')
set #query =
'
SELECT
ID
,SUM('+ #cols + ')
FROM Output_table
GROUP BY
ID
'
execute(#query);

Combine two pivot tables SQL Server

I am trying to cross join two pivot tables.
--First Pivot table query gets columns of drug_names and produces the row value
--of the drug_id.
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
Select #cols = STUFF((SELECT ',' + QUOTENAME(drug)
from _app_drugs
group by drug, drug_id,order_number
order by order_number
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = N'SELECT ' + #cols + N' from
(
select drug_id, drug
from _app_drugs
) x
pivot
(
max(drug_id)
for drug in (' + #cols + N')
) p'
exec sp_executesql #query;
--The second pivot table simply gets the signature_labels and displays the label name in the column and displays the label_id as the row value.
DECLARE #cols AS NVARCHAR(MAX),#scols as NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
Select #cols = STUFF((SELECT ',' + QUOTENAME(signature_label)
from _app_signature_labels
WHERE _app_signature_labels.isactive=1
group by signature_label_id, signature_label,ordernumber
order by ordernumber
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = N'SELECT ' + #cols + N' from
(
select signature_label_id,signature_label
from _app_signature_labels
) x
pivot
(
max(signature_label_id)
for signature_label in (' + #cols + N')
) p'
exec sp_executesql #query;
Now I just need to know how to combine these two pivot tables as one table... they don't have a common field and don't need one.
Can anybody help me with this one?
Thank you
You can execute two separate dynamic SQL statements into two global temp tables and then combine the result, like this:
IF object_id('tempdb..##tmpResult1') IS NOT NULL
BEGIN
DROP TABLE ##tmpResult1
END
IF object_id('tempdb..##tmpResult2') IS NOT NULL
BEGIN
DROP TABLE ##tmpResult2
END
DECLARE #cols AS NVARCHAR(MAX),
#cols2 AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX),
#query2 AS NVARCHAR(MAX)
Select #cols = STUFF((SELECT ',' + QUOTENAME(drug)
from _app_drugs
group by drug, drug_id,order_number
order by order_number
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = N'SELECT ' + #cols + N' INTO ##tmpResult1 from
(
select drug_id, drug
from _app_drugs
) x
pivot
(
max(drug_id)
for drug in (' + #cols + N')
) p'
exec sp_executesql #query;
--The second pivot table simply gets the signature_labels and displays the label name in the column and displays the label_id as the row value.
Select #cols2 = STUFF((SELECT ',' + QUOTENAME(signature_label)
from _app_signature_labels
WHERE _app_signature_labels.isactive=1
group by signature_label_id, signature_label,ordernumber
order by ordernumber
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query2 = N'SELECT ' + #cols2 + N' INTO ##tmpResult2 from
(
select signature_label_id,signature_label
from _app_signature_labels
) x
pivot
(
max(signature_label_id)
for signature_label in (' + #cols2 + N')
) p'
exec sp_executesql #query2;
SELECT * FROM ##tmpResult1 t1
INNER JOIN ##tmpResult2 t2 ON t1.ordernumber = t2.ordernumber
This is also a way to address this error when doing a large PIVOT query: Internal error: An expression services limit has been reached. Please look for potentially complex expressions in your query, and try to simplify them.

Workaround DECLARE statement in View

I have the following which I would like to be a View, but the Declare statement is not allowed apparently.
What is the best solution/work-around to this problem?
I'm using SQL Server. I have tried many other solutions (Stored Procedures, Table-Values Functions), but I think the combination of Dynamic SQL is complicating the matter and I haven't been able to get anything working.
DECLARE #cols AS NVARCHAR(MAX),
#colsAlias AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX);
select #cols = STUFF((SELECT DISTINCT ',' + QUOTENAME(MeasurementTypeID)
FROM dbo.Measurements
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
SELECT #colsAlias = STUFF((SELECT DISTINCT ',' + QUOTENAME(dbo.Measurements.MeasurementTypeID) + ' AS ' + QUOTENAME(dbo.MeasurementTypes.MeasurementType)
FROM dbo.Measurements INNER JOIN dbo.MeasurementTypes ON dbo.Measurements.MeasurementTypeID = dbo.MeasurementTypes.MeasurementTypeID
FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,1,'')
SET #query = 'SELECT NeuronID, ' + #colsAlias +' FROM
(
SELECT MeasurementName, MeasurementValue, NeuronID, MeasurementTypeID
FROM dbo.Measurements
) x
PIVOT
(
MIN(MeasurementValue) FOR MeasurementTypeID IN (' + #cols + ')
) AS p'
EXECUTE(#query)

Dynamic Pivot Results to a Temp Table

While I was able to find how to pivot this data in these forums, I have not been able to find a means to push the results to a temp table so that I can use it for other queries. The code is the following. Is there a possible way to have the output of this populate a temp table?
SET #cols = STUFF((SELECT distinct ',' + QUOTENAME(QT.QUESTION_DESC)
FROM #QUES_TEMP QT
GROUP BY QT.QUESTION_DESC
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT EVAL_ID, AuditType, ' + #cols + '
into ##tmp
from
(
select QT.EVAL_ID,
QT.AuditType,
QT.SCORE,
QT.QUESTION_DESC
from #QUES_TEMP QT
) x
pivot
(
max(SCORE)
for QUESTION_DESC in (' + #cols + ')
) p '
execute(#query);
select * from ##tmp
You should be able to use INTO Clause. I added INTO into your example.
SET #cols = STUFF((SELECT distinct ',' + QUOTENAME(QT.QUESTION_DESC)
FROM #QUES_TEMP QT
GROUP BY QT.QUESTION_DESC
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT EVAL_ID, AuditType, ' + #cols + ' from
(
select QT.EVAL_ID,
QT.AuditType,
QT.SCORE,
QT.QUESTION_DESC
into ##tmp
from #QUES_TEMP QT
) x
pivot
(
max(SCORE)
for QUESTION_DESC in (' + #cols + ')
) p '
execute(#query);
SELECT * FROM ##tmp
SET #cols = STUFF((SELECT distinct ',' + QUOTENAME(QT.QUESTION_DESC)
FROM #QUES_TEMP QT
GROUP BY QT.QUESTION_DESC
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT EVAL_ID, AuditType, ' + #cols + '
from
(
select QT.EVAL_ID,
QT.AuditType,
QT.SCORE,
QT.QUESTION_DESC
from #QUES_TEMP QT
) x
pivot
(
max(SCORE)
for QUESTION_DESC in (' + #cols + ')
) p '
set #query = 'select * into ##Temp from ('+#query+') y'
execute(#query)
select * from ##Temp

sql table row - column conversion

I have following table:
How to convert the above table into below structure? I tried using pivot table but couldn't get it to work.
You need to have to look up SQL PIVOT.
Check this fiddle
And the code:
SELECT *
FROM
(
SELECT Prodname,
pcode,
Biiledamt
FROM Product
) p
PIVOT
(
SUM (Biiledamt)
FOR Prodname IN ([Prod1],[Prod2],[Prod3],[Prod4])
) AS pvt
If you do not know beforehand the columns then you can check this fiddle which dynamically generates the columns to use.
The code for that is:
DECLARE #cols AS VARCHAR(MAX),
#query AS VARCHAR(MAX)
SET #cols = STUFF((SELECT distinct ',[' + Prodname +']'
FROM Product c
FOR XML PATH(''), TYPE
).value('.', 'VARCHAR(MAX)')
,1,1,'')
SET #query =
' SELECT *
FROM
(
SELECT Prodname,
pcode,
Biiledamt
FROM Product
) p
PIVOT
(
SUM (Biiledamt)
FOR Prodname IN (' + #cols + ')
) AS pvt
'
EXEC(#query)