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Pivoting in SQL Server 2000

In one of the discussion forums, one guy asked the following question:

Here is the Table:

Id

SalesDate

Sales

1

2 Jan 2006

100

1

13 Jan 2006

200

1

14 Feb 2006

300

2

3 Feb 2006

150

2

4 Feb 2006

200

3

5 Jan 2006

300

3

13 Feb 2006

400

I need the following output:

Id

Jan

Feb

Mar

Apr

1

300

300

0

0

2

0

350

0

0

3

300

400

0

0


Solution:

Let’s create a table

CREATE TABLE PivotEx (Id INT, SalesDate DATETIME, Sales MONEY)

Next, Insert values

INSERT INTO PivotEx VALUES (1,'2 Jan 2006',100)

INSERT INTO PivotEx VALUES (1,'13 Jan 2006',200)

INSERT INTO PivotEx VALUES (1,'14 Feb 2006',300)

INSERT INTO PivotEx VALUES (2,'3 Feb 2006',150)

INSERT INTO PivotEx VALUES (2,'4 Feb 2006',200)

INSERT INTO PivotEx VALUES (3,'5 Jan 2006',300)

INSERT INTO PivotEx VALUES (3,'13 Feb 2006',400)

Here is the query:

SELECT Id, SUM(CASE WHEN MONTH(SalesDate) = 1 THEN Sales ELSE 0 END) AS 'Jan',

SUM(CASE WHEN MONTH(SalesDate) = 2 THEN ISNULL(Sales,0) ELSE 0 END) AS 'Feb',

SUM(CASE WHEN MONTH(SalesDate) = 3 THEN ISNULL(Sales,0) ELSE 0 END) AS 'Mar',

SUM(CASE WHEN MONTH(SalesDate) = 4 THEN ISNULL(Sales,0) ELSE 0 END) AS 'Apr'

FROM PivotEx

GROUP BY Id

CASE statement has to be extended for each and every month.

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