RE: Cross Tab

[Jerry Adams <Jerry@xxxxxxxxxxxxxxx>]

Charles and Alan,

Thanks for the link.  I've downloaded the article and accompanying code.

Jerry C. Adams
IBM System i Programmer/Analyst
B&W Wholesale
office: 615-995-7024
email:  jerry@xxxxxxxxxxxxxxx


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Thursday, December 18, 2008 8:19 AM
To: Midrange Systems Technical Discussion
Subject: Re: Cross Tab

No, DB2 UDB for i5/OS doesn't have a cross-tab/pivot table function built in.

Web query is probably your best bet.

However, you can actually manually perform the cross-tab function
using the CASE statement.

Given:

Period    Category    Sales
2002-01 Snacks       3000.25
2002-01 Beverages   2145.01
2002-01 Fruit           175.20
2002-02 Snacks       2167.40
2002-02 Beverages   2022.39

Select Period,
         Sum(Case When Category='Beverages'
                  Then SalesAmt End) As Beverages,
         Sum(Case When Category='Fruit'
                  Then SalesAmt End) As Fruit,
         Sum(Case When Category='Snacks'
                  Then SalesAmt End) As Snacks
    From Sales
Group By Period
Order By Period

Gives you:
Period   	 Beverages   	 Fruit   	 Snacks
2002-01 	2145.01 	         175.20 	3000.25
2002-02 	2022.39 	          -- 	        2167.40



In addition, on the web you'll find various utilities developers have
written to automate this process so that you don't have to know ahead
of time how many columns you'll need.

Here's one, (from which I took the above example)
http://www.itjungle.com/mpo/mpo032703-story01.html

HTH,
Charles


On Thu, Dec 18, 2008 at 8:29 AM, Jerry Adams <Jerry@xxxxxxxxxxxxxxx> wrote:
> My boss (the PC server guy) asked me if System i's  SQL had a cross tab function.  Never heard of it, but he said it was like a pivot table.
>
> My searches in the SQL manuals, Info Center, and the srchives only turned up a reference in the IC to OLAP in Web Query for DB2.
>
> Is there a cross tab function in SQL?  We do have 5722-ST1 (DB2 Query Mgr and SQL DevKit) installed.
>
> Thanks.
>
> Jerry C. Adams
> IBM System i Programmer/Analyst
> B&W Wholesale
> office: 615-995-7024
> email:  jerry@xxxxxxxxxxxxxxx
>
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