Retrieve Rows as columns in sqlserver 2008 - sql-server

Question

i have a Table DistanceTable
It has Columns like
Slno From To Dist
-----------------------------
1 Vskp Hyd 100
2 Hyd Chennai 200
3 Chennai Vskp 458
Now i want the data to be displayed as
VSKP HYD CHENNAI
VSKP 0km 100km 458km
HYD 100km 0km 200km
CHANNAI 458km 200km 0km
I tried with the query
SELECT *
FROM ( SELECT slno, fromcity ,tocity
FROM DistanceTable ) AS ET
PIVOT(MIN(slno) FOR fromcity IN (tocity) AS PT
Link To the question in .txt file

Answer 1

Try this :
SELECT fromcity
,[Vskp]=isnull([Vskp],0)
,[Hyd]=isnull([Hyd],0)
,[Chennai]=isnull([Chennai],0)
FROM ( SELECT fromcity ,tocity,Dist
FROM DistanceTable
union
SELECT tocity,fromcity ,Dist
FROM DistanceTable
) AS ET
PIVOT
(max(dist) FOR tocity IN ([Vskp],[Hyd],[Chennai])
) AS PT
SQL FIddle
Update :
Use dynamic SQL for variable number of cities as below :
DECLARE
#cols VARCHAR(MAX),
#IsNullCols VARCHAR(MAX),
#query VARCHAR(MAX)
SELECT
#cols = STUFF((
SELECT DISTINCT ', [' + tocity + ']'
FROM (SELECT tocity FROM DistanceTable
union
SELECT fromcity FROM DistanceTable)a
FOR XML PATH('')
), 1, 2, '');
print #cols;
SELECT
#IsNullCols = STUFF((
SELECT DISTINCT ', ['+tocity+']=IsNull([' + tocity + '],0)'
FROM (SELECT tocity FROM DistanceTable
union
SELECT fromcity FROM DistanceTable)a
FOR XML PATH('')
), 1, 2, '');
print #IsNullCols;
set #query = 'SELECT fromcity
,'+ #IsNullCols +'
FROM (
SELECT fromcity ,tocity,Dist
FROM DistanceTable
union
SELECT tocity,fromcity ,Dist
FROM DistanceTable
) AS ET
PIVOT
(max(dist) FOR tocity IN ('+#cols+')
) AS PT '
exec(#query)

Answer 2

here's a solution (but w/out pivot):
SELECT
fromcity as ' '
,ISNULL((SELECT SUM(dist) FROM DistanceTable d2 WHERE (d2.tocity = 'VSKP' AND d2.fromcity = d.fromcity) OR (d2.tocity = d.fromcity AND d2.fromcity = 'VSKP')), 0) as 'VSKP'
,ISNULL((SELECT SUM(dist) FROM DistanceTable d2 WHERE (d2.tocity = 'HYD' AND d2.fromcity = d.fromcity) OR (d2.tocity = d.fromcity AND d2.fromcity = 'HYD')), 0) as 'HYD'
,ISNULL((SELECT SUM(dist) FROM DistanceTable d2 WHERE (d2.tocity = 'CHENNAI' AND d2.fromcity = d.fromcity) OR (d2.tocity = d.fromcity AND d2.fromcity = 'CHENNAI')), 0) as 'CHENNAI'
FROM DistanceTable d
SQL fiddle

Answer 3

Let me explain this issue demonstrating simple example.
USE AdventureWorks
GO
-- Creating Test Table
CREATE TABLE Product(Cust VARCHAR(25), Product VARCHAR(20), QTY INT)
GO
-- Inserting Data into Table
INSERT INTO Product(Cust, Product, QTY)
VALUES('KATE','VEG',2)
INSERT INTO Product(Cust, Product, QTY)
VALUES('KATE','SODA',6)
INSERT INTO Product(Cust, Product, QTY)
VALUES('KATE','MILK',1)
INSERT INTO Product(Cust, Product, QTY)
VALUES('KATE','BEER',12)
INSERT INTO Product(Cust, Product, QTY)
VALUES('FRED','MILK',3)
INSERT INTO Product(Cust, Product, QTY)
VALUES('FRED','BEER',24)
INSERT INTO Product(Cust, Product, QTY)
VALUES('KATE','VEG',3)
GO
-- Selecting and checking entires in table
SELECT *
FROM Product
GO
-- Pivot Table ordered by PRODUCT
SELECT PRODUCT, FRED, KATE
FROM (
SELECT CUST, PRODUCT, QTY
FROM Product) up
PIVOT (SUM(QTY) FOR CUST IN (FRED, KATE)) AS pvt
ORDER BY PRODUCT
GO
-- Pivot Table ordered by CUST
SELECT CUST, VEG, SODA, MILK, BEER, CHIPS
FROM (
SELECT CUST, PRODUCT, QTY
FROM Product) up
PIVOT (SUM(QTY) FOR PRODUCT IN (VEG, SODA, MILK, BEER, CHIPS)) AS pvt
ORDER BY CUST
GO