how do I use Pivot in Sql Server? - sql

Question

I have a table that stores the data as follows:
username status
user1 HT
user2 EC
user1 PR
user1 EC
user2 HT
I need result something like this
username HT EC PR GrandTotal
user1 1 1 1 3
user2 1 1 0 2
Total 2 2 1 5
please anybody help me. Thanks in advance

Answer 1

It is simple when Status values are fixed.
select
username,
sum(case when status='HT' then 1 else 0 end) as HT,
sum(case when status='EC' then 1 else 0 end) as EC,
sum(case when status='PR' then 1 else 0 end) as PR,
count(*) as total
from
table
group by
username
WITH ROLLUP
If they are dynamic, you need to use http://beyondrelational.com/modules/2/blogs/70/posts/10840/dynamic-pivot-in-sql-server-2005.aspx

Answer 2

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
-- Unpivot Table ordered by CUST
SELECT CUST, PRODUCT, QTY
FROM
(
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) p
UNPIVOT
(QTY FOR PRODUCT IN (VEG, SODA, MILK, BEER, CHIPS)
) AS Unpvt
GO
-- Clean up database
DROP TABLE Product
GO
ResultSet:
-- Selecting and checking entires in table
Cust Product QTY
------------------------- -------------------- -----------
KATE VEG 2
KATE SODA 6
KATE MILK 1
KATE BEER 12
FRED MILK 3
FRED BEER 24
KATE VEG 3
-- Pivot Table ordered by PRODUCT
PRODUCT FRED KATE
-------------------- ----------- -----------
BEER 24 12
MILK 3 1
SODA NULL 6
VEG NULL 5
-- Pivot Table ordered by CUST
CUST VEG SODA MILK BEER CHIPS
------------------------- ----------- ----------- ----------- ----------- -----------
FRED NULL NULL 3 24 NULL
KATE 5 6 1 12 NULL
-- Unpivot Table ordered by CUST
CUST PRODUCT QTY
------------------------- -------- -----------
FRED MILK 3
FRED BEER 24
KATE VEG 5
KATE SODA 6
KATE MILK 1
KATE BEER 12 12
Reference:
http://blog.sqlauthority.com/2008/06/07/sql-server-pivot-and-unpivot-table-examples/