Perhaps my example is too simple but I need to transpose the results from being multiple rows to being multiple columns in a single row. The only issue that the number of returned initial rows may vary so therefore my final number of columns may vary also.
As an example, my returned results from
select name from pets
could be:
Dog
Cat
Fish
Rabbit
And I need each value in a separate column:
Dog Cat Fish Rabbit
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX)
-- First create list of columns that you need in end result
SET #columns = N''
SELECT #columns += N', ' + QUOTENAME(name)
FROM (select distinct name from pets) AS x
-- now create pivot statement as:
SET #sql = N'
SELECT ' + STUFF(#columns, 1, 2, '') + '
FROM
(
SELECT name
FROM pets
) AS j
PIVOT
(
max(name) FOR name IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+ ')
) AS p;'
EXEC sp_executesql #sql;
DEMO
Related
I'm trying to Pivot a Table on X and Y position. The table is in a format similar to below.
Each row has a value which is relative to its Row and Column Position.'AThing' and 'FileName' are to be ignored in the data set.
So if this was pivoted we would get:
Iv'e been trying for a while but can't seem to figure it out, any ideas?
EDIT: Number of Fields are dynamic per 'FileName'. I have managed to extract the column names but not the data using:
-- Construct List of Columns to Pivot
SELECT #PivotCols =
STUFF(
(SELECT ',' + QUOTENAME(FieldName)
FROM #Data
GROUP BY ColPos, FieldName
ORDER BY ColPos ASC
FOR XML PATH(''),TYPE).value('.', 'NVARCHAR(MAX)')
,1,1,'')
SET #PivotQuery =
SELECT ' + #PivotCols + N'
FROM
(
SELECT ColPos, FieldName
FROM #Data
GROUP BY ColPos, FieldName
) x
PIVOT
(
MIN(ColPos)
FOR FieldName IN (' + #PivotCols + N')
) p'
EXEC sp_executesql #PivotQuery
Please try this code:
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX);
SET #columns = N'';
SELECT #columns += N', p.' + QUOTENAME(FieldName)
FROM (SELECT distinct p.FieldName FROM Tablename AS p
) AS x;
SET #sql = N'
SELECT ' + STUFF(#columns, 1, 2, '') + '
FROM
(
SELECT p.Value, p.FieldName, p.RowPos
FROM Tablename AS p
) AS j
PIVOT
(
MAX(Value) FOR FieldName IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+ ')
) AS p;';
PRINT #sql;
EXEC sp_executesql #sql;
I have a dynamic pivoted query which generates a result set and I want to insert that data into a table. But the problem is columns are dropped or generated by the time. So by the time I cannot predict columns. That is why I created a dynamic pivoted dataset. So how to insert that data set into table?
One solution is to drop and recreate the table every time but I don't know how to do it. I tried CTE, TEMP table but EXEC support only select, insert, update, delete statement:
DECLARE #columns NVARCHAR(MAX), #sqlquery NVARCHAR(MAX), #orderby Nvarchar(MAX),#value Nvarchar(max);
SET #columns = N'';
SET #value=N'0'
SELECT #columns += N', ' + QUOTENAME([Note_Type])
FROM
(
SELECT distinct
No_T
FROM [DS_DM].[dbo].[DAILY_TABLE]
where No_T not in (570,80,150,590,80,99)
)as A order by No_T
SET #sqlquery = N'
Select
K._Number
,D.C_Number
,' + STUFF(#columns, 1, 2, '') + '
from
(
select
_Number
,' + STUFF(#columns, 1, 2, '') + '
from
(
select distinct
right(REPLICATE('+#value+',11) +_Number,11) as [_Number]
,No_t
,No_T_Des
FROM [DS_DM].[dbo].[DAILY_TABLE]
where No_T not in (570,80,150,590,80,99)
)AS J
pivot
(
count(No_T_Des) FOR [No_t] IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+ ')
)P
)K
left join
[DS_DM].[dbo].[D_TABLE] D on k._Number = D._Number
';
EXEC sp_executesql #sqlquery
I've modified your code to reflect my proposed solution.
IF OBJECT_ID (N'NEW_TABLE', N'U') IS NOT NULL
BEGIN
DROP TABLE NEW_TABLE
END
DECLARE #columns NVARCHAR(MAX), #sqlquery NVARCHAR(MAX), #orderby Nvarchar(MAX),#value Nvarchar(max);
SET #columns = N'';
SET #value=N'0'
SELECT #columns += N', ' + QUOTENAME([Note_Type])
FROM
(
SELECT distinct
No_T
FROM [DS_DM].[dbo].[DAILY_TABLE]
where No_T not in (570,80,150,590,80,99)
)as A order by No_T
SET #sqlquery = N'
Select
K._Number
,D.C_Number
,' + STUFF(#columns, 1, 2, '') + '
INTO NEW_TABLE
from
(
select
_Number
,' + STUFF(#columns, 1, 2, '') + '
from
(
select distinct
right(REPLICATE('+#value+',11) +_Number,11) as [_Number]
,No_t
,No_T_Des
FROM [DS_DM].[dbo].[DAILY_TABLE]
where No_T not in (570,80,150,590,80,99)
)AS J
pivot
(
count(No_T_Des) FOR [No_t] IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+ ')
)P
)K
left join
[DS_DM].[dbo].[D_TABLE] D on k._Number = D._Number
';
EXEC sp_executesql #sqlquery
So I found the answers to my questions.
there are 2 fileds which remais static every time. so I've created ETL that drop that table and recreate every single day with those two fileds. and rest of the 66 columns which are dynamic (drops or newly created) every day. so i've made a cursor for that which loop through all of that categories and altering that table that've created and added that code to ETL
So bassically Every single day that ETL Runs Drop the existing table, Create new table with the 2 static filds and altering same table using cursor with the dynamic filds.
In the table below, I have a variable number of columns, and that number is in the 1000s. I need to sum all the values of each of the 1000 columns grouped by the person's name. So, smith's total test_score_1, total test_score_2,...total test_score_1000. And then Jackson's total test_score_1, total test_score_2,...total test_score_1000.
I don't know the number of 'test_score_n' columns beforehand and they are always changing.
So given this table:
name test_score_1 test_score_2 ... test_score_1000
smith 2 1 0
jackson 0 3 1
jackson 1 1 2
jackson 3 0 3
smith 4 5 1
How can I produce the table below?
name test_score_1 test_score_2 ... test_score_1000
smith 6 6 1
jackson 4 4 6
SQL to generate the SQL
DECLARE #generatedSQL nvarchar(max);
SET #generatedSQL = (
SELECT
'SELECT ' +
SUBSTRING(X.foo, 2, 2000) +
'FROM ' +
QUOTENAME(SCHEMA_NAME(t.schema_id)) + '.' + QUOTENAME(t.name) +
' GROUP BY name' --fix this line , edited
FROM
sys.tables t
CROSS APPLY
(
SELECT
', SUM(' + QUOTENAME(c.name) + ')'
FROM
sys.columns c
WHERE
c.object_id = t.object_id
AND
c.name <> 'Name'
FOR XML PATH('')
) X (foo)
WHERE
t.name = 'MyTable'
);
EXEC (#generatedSQL);
Demo: http://rextester.com/MAFCP19297
SQL
DECLARE #cols varchar(max), #sql varchar(max);
SELECT #cols =
COALESCE(#cols + ', ', '') + 'SUM(' + COLUMN_NAME + ') AS ' + COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = '<tbl name>'
AND COLUMN_NAME <> 'name'
-- The AND below may be optional - see "Additional Notes #1"
AND TABLE_CATALOG = '<database schema name>';
SET #sql = 'SELECT name, ' + #cols + ' FROM tbl GROUP BY name;';
EXEC (#sql);
Explanation
The DECLARE creates two variables - one for storing the column summing part of the SQL and the other for storing the whole dynamically created SQL statement to run.
The SELECT queries the INFORMATION_SCHEMA.COLUMNS system table to get the names of all the columns in tbl apart from the name column. (Alternatively the sys tables could be used - answers to this question discuss the relative merits of each). These row values are then converted into a single comma separated value using this method (which is arguably a little simpler than the alternative FOR XML PATH ('') method). The comma-separated values are a bit more than just the column names - they SUM over each column name and then assign the result with an alias of the same name.
The SET then builds a simple SQL statement that selects the name and all the summed values - e.g: SELECT name, SUM(test_score_1) AS test_score_1, SUM(test_score_2) AS test_score_2, SUM(test_score_1000) AS test_score_1000 FROM tbl GROUP BY name;.
The EXEC then runs the above query.
Additional Notes
If there is a possibility that the table name may not be unique across all databases then the following clause is needed in the select: AND TABLE_CATALOG = '<database schema name>'
My initial answer to this question was mistakenly using MySQL rather than SQL Server - this has now been corrected but the previous version is still in the edit history and might be helpful to someone...
Try this dynamic column generation Sql script
DECLARE #Sql nvarchar(max)
SET #Sql=( SELECT DISTINCT 'SELECT'+
STUFF((SELECT ', '+ ' SUM( '+ COLUMN_NAME +' ) AS '+ QUOTENAME( COLUMN_NAME )
FROM INFORMATION_SCHEMA.COLUMNS Where TABLE_NAME ='Tab1000'
FOR XML PATH (''),type).value('.','varchar(max)'),1,2,'')
+' From Tab1000'From INFORMATION_SCHEMA.COLUMNS Where TABLE_NAME ='Tab1000')
EXEC (#sql)
Try the below script
(set the #tableName= [yourTablename] and #nameColumn to the name of the field you want to group by)
Declare #tableName varchar(50)='totalscores'
Declare #nameColumn nvarchar(50)='name'
Declare #query as nvarchar(MAX) ;
select #query = 'select ' + nameColumn + cast(sumColumns as nvarchar(max)) + 'from ' + #tableName +' group by ' + nameColumn from (
select #nameColumn nameColumn, (SELECT
', SUM(' + QUOTENAME(c.name) + ') ' + QUOTENAME(c.name)
FROM
sys.columns c
WHERE
c.object_id=t.object_id and c.name != #nameColumn
order by c.name
FOR
XML path(''), type
) sumColumns
from sys.tables t where t.name= #tableName
)t
EXECUTE(#query)
Change tablename with your tablename.
Declare #query as nvarchar(MAX) = (SELECT
'SELECT name,' + SUBSTRING(tbl.col, 2, 2000) + ' FROM ' + QUOTENAME(SCHEMA_NAME(t.schema_id)) + '.' + QUOTENAME(t.name) + 'Group By name'
FROM
sys.tables t
CROSS APPLY
(
SELECT
', SUM(' + QUOTENAME(columns.name) + ') as ' + columns.name
FROM
sys.columns columns
WHERE
columns.object_id = t.object_id and columns.name != 'name'
FOR XML PATH('')
) tbl (col)
WHERE
t.name = 'tablename')
select #query EXECUTE(#query)
GBN's dynamic SQL would be my first choice (+1), and would be more performant. However, if you are interested in breaking this horrible cycle of a 1,000+ columns, consider the following:
Example
Declare #YourTable Table ([col 1] int,[col 2] int,[col 1000] varchar(50))
Insert Into #YourTable Values
(2,1,0)
,(4,5,1)
Select Item = replace(C.Item,'_x0020_', ' ')
,Value = sum(C.Value)
From #YourTable A
Cross Apply (Select XMLData= cast((Select A.* for XML RAW) as xml)) B
Cross Apply (
Select Item = a.value('local-name(.)','varchar(100)')
,Value = a.value('.','int')
From B.XMLData.nodes('/row') as C1(n)
Cross Apply C1.n.nodes('./#*') as C2(a)
Where a.value('local-name(.)','varchar(100)') not in ('Fields','ToExclude')
) C
Group By C.Item
Returns
Item Value
col 1 6
col 2 6
col 1000 1
I want to transpose an SQL table from a row into a column of results. The statement will only return one record however at the time of running the query I will not know the names of attributes in the table. All the query will know is the table and the ID column to return the relevant record.
i.e. I would like to return this as a column of results:
SELECT * FROM ExampleTable WHERE (PKCol = 'XYZ');
That is the only information I will know at the time of running the query in SQL Server 2012.
Thanks
You should retrieve column names from sys.columns system view, concat them in cusror and use UNPIVOT.
Something like this:
DECLARE #columns AS NVARCHAR(MAX) = '', #columns_char AS NVARCHAR(MAX) = '', #query AS NVARCHAR(MAX)
SELECT #columns += ',' + c.name, #columns_char += ',CAST(' + c.name + ' AS VARCHAR(255)) AS ' + c.name FROM sys.columns AS c WHERE c.object_id = OBJECT_ID(N'Your Table Name')
SELECT #columns = STUFF(#columns, 1, 1, ''), #columns_char = STUFF(#columns_char, 1, 1, '')
SELECT #columns, #columns_char
SET #query =
N'SELECT
column_name,
col
FROM
(
SELECT ' + #columns_char + ' FROM ' + Your_table_name + N' AS t
WHERE t.id = ' + Your Id + N'
) AS sel
UNPIVOT
(
col FOR column_name IN(' + #columns + ')
) AS upt';
EXEC sp_executesql #query
I have formulated the following dynamic SQL Query to turn an unkown number of row values (Maschine Names as nvarchar) into columns. The Row Values of the Pivoted Columns should be the sum of downtime and maintenance time (both int) for the particular Maschine.
DECLARE #columns NVARCHAR(MAX), #sql NVARCHAR(MAX);
SET #columns = N'';
SELECT #columns += N', p.' + QUOTENAME(Maschines)
FROM (SELECT Maschines FROM Rawdata AS p
GROUP BY MASCHINE) AS x;
SET #sql = N'
SELECT ' + STUFF(#columns, 1, 2, '') + '
FROM(
SELECT * from Rawdata
) AS j
PIVOT
(
SUM(maintenance) FOR Maschines IN ('
+ STUFF(REPLACE(#columns, ', p.[', ',['), 1, 1, '')
+')
) AS p;';
EXEC sp_executesql #sql;
The Query returnes the Summed up maintenance time, but once i try to include more than one column in the sum ( like Sum(maintenance+downtime) ) i get an error close to '+'.
In addition, the query returns a pivoted table, but still has the same number of rows, however i need a result that is grouped for the unkown number of columns, thus containing only one row
So unfortunately PIVOT in SQL is fairly limited in that you can only perform a single aggregation of a single column.
Your best option is instead of just doing
Select * from rawdata
as your source, include a column that pre-adds maintenance and downtime together, like
select *, maintenance + downtime as TotalTime from rawdata
and then aggregate it.