Is there any quick way I could transpose values in a row to column headers.. say I have row values A, B, C ... Z in a column called indx_nm. Is there a easy way to make column headers A, B, C ... Z without having to manually populate this (I have 1000 distinct values that I meet to make a covariance matrix out of)
You may use dynamic PIVOT.
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX);
SET #cols = STUFF((SELECT ',' + CONVERT(VARCHAR,indx_nm)
FROM TableName c
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT ' + #cols + ' from (
select indx_nm,
Othercolumn
from temp
) x
pivot
(
max(Othercolumn)
for indx_nm in (' + #cols + ')
) p '
EXECUTE #query
Related
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);
I have the following code to do Pivot and Unpivot on a set of columns:
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX),
#colsUnpivot AS NVARCHAR(MAX)
select #colsUnpivot = stuff((select ','+quotename(C.name)
from tempdb.sys.columns as C
where C.object_id = object_id('tempdb..#TmpTable')
for xml path('')), 1, 1, '')
SET #cols = STUFF((SELECT ',' + QUOTENAME(a.Date)
FROM
(Select top 10000 date from
#TmpTable
order by date) a
group by a.Date
order by a.Date
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT name, ' + #cols + ' from
(
select Date,name,value
from #TmpTable
unpivot
(
value for name in ('+#colsUnpivot+')
) unpiv
) x
pivot
(
sum(value)
for date in (' + #cols + ')
) p '
exec(#query)
But, I keep getting these errors which I can't figure out why:
The type of column "Date" conflicts with the type of other columns specified in the UNPIVOT list.
Invalid column name 'Date'
The type of Date column in the temp table is datetime.
This post was very helpful to explain the issue. Basically, I had to convert the values to decimal for all the columns in the inner select statement of the unpivot section:
Error : The type of column "DOB" conflicts with the type of other columns specified in the UNPIVOT list
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.
Trying to create a view with a PIVOT in it, can't figure out the syntax. The source view has three columns: ClientNameID, Item, and CountOfItem. I want ClientNameID to be the row, Item to be the column, and CountOfItem to be the value.
I figured it out:
SELECT clientnameid
FROM dbo.vAggregateSalesByCustomerAndItem
pivot (
Sum(countOfItem) FOR Item in ([Ring])
) PivotTable
The problem was syntax BUT I also learned that the dimensions (columns) must be hard-coded in the DML. I wanted to get the dimensions dynamically from a table, which is do-able in Excel, with a column range, but not here.
I think you should try this. its worked for you..
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
select #cols = STUFF((SELECT DISTINCT ',' + Item
from dbo.vAggregateSalesByCustomerAndItem
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT clientnameid ' + #cols + ' from
(
select clientnameid,countOfItem,Item
from dbo.vAggregateSalesByCustomerAndItem
) x
pivot
(
Sum(countOfItem)
for Item in (' + #cols + ')
) p '
execute(#query);
When I run a SQL query which returns one column with variable number of rows returned, I'd like to transform each of the row into column VALUE (I don't mind what the column header/titles are).
E.g.
Column1
-------
a
b
c
d
e
I want a script which will transform the above into a table like:
Col1 Col2 Col3 Col4 Col5
------------------------
a b c d e
(Note that I do not care for the column names).
I know I cannot user PIVOT as row numbers are not fixed (they are based on a SQL query).
Any ideas?
Thanks!
You're trying to pivot your results and include a counter in your column name. Since I'm presuming you don't know the potential number of columns, you'll need to use Dynamic SQL to accomplish this.
This should be close using ROW_NUMBER to get the counter:
declare #cols AS NVARCHAR(MAX),
#colswithalias AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
set #colswithalias = STUFF((SELECT distinct ',' + QUOTENAME(col1)
+ ' AS Col'
+ CAST(ROW_NUMBER() OVER (ORDER BY col1) as varchar(10))
FROM yourtable
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #cols = STUFF((SELECT distinct ',' + QUOTENAME(col1)
FROM yourtable
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT ' + #colswithalias + '
from
(
select col1 rn, col1
from yourtable
) x
pivot
(
max(rn)
for col1 in (' + #cols + ')
) p '
execute(#query)
SQL Fiddle Demo