Solved

Crosstab function

Posted on 2009-05-15
6
241 Views
Last Modified: 2012-05-07
I have data in a table like this:

Level1      Level2       Level3       Level4       Error
--------      --------       --------       --------       ------
Red1        Red2          Red3         Red4         E
Red1        Red2          Red3         Red4         E
Red1        Red2          Red3         Red4         E
Red1        Red2          Red3         Red4         A
Red1        Red2          Red3         Red4         A
Red1        Red2          Red3         Blue4        E
Red1        Red2          Blue3        Blue4        W
Red1        Red2          Blue3        Blue4        W
Red1        Red2          Red3         Blue4        A

I need a function to give a cross tab counts result like the following:

Level1      Level2       Level3       Level4       Error_A     Error_E      Error_W
--------      --------       --------       --------       ---------      ---------      ----------
Red1        Red2          Red3         Red4         2                3
Red1        Red2          Red3         Blue4         1                1
Red1        Red2          Blue3        Blue4                                              2
0
Comment
Question by:Fairfield
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
6 Comments
 
LVL 26

Accepted Solution

by:
tigin44 earned 500 total points
ID: 24396693
try this
select level1, level2, level3, level4,
   sum(case when error = 'A' tthen 1 else 0 end) as error_A,
   sum(case when error = 'E' tthen 1 else 0 end) as error_E,
   sum(case when error = 'W' tthen 1 else 0 end) as error_W
from yourTbale
group by level1, level2, level3, level4

Open in new window

0
 

Author Comment

by:Fairfield
ID: 24396769
Do I use this in a function or as a select statement in a query?  If in a function, can you tell me how to use it?
0
 
LVL 57

Expert Comment

by:Raja Jegan R
ID: 24396825
Use Pivot Function for better performance
SELECT Level1, Level2, Level3, Level4, [A] AS Error_A,[E] AS Error_E,[W] AS Error_W
FROM (
SELECT Level1, Level2, Level3, Level4, Error
FROM urtable) ps
PIVOT
(count (level1)
FOR Error IN
( [A], [E], [W])
) AS pvt

Open in new window

0
Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

 
LVL 57

Expert Comment

by:Raja Jegan R
ID: 24396832
You can use this as part of your SELECT statement itself. No Need for any functions to handle this
0
 
LVL 26

Expert Comment

by:tigin44
ID: 24396834
you can use as you needed.
if you want you may put the select staement into a funtion and call taht function when you need it.
0
 

Author Comment

by:Fairfield
ID: 24396967
rrjegan17:
I am receiving and error when using your solution



Msg 207, Level 16, State 1, Line 1
Invalid column name 'Level1'.
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

I have written a PowerShell script to "walk" the security structure of each SQL instance to find:         Each Login (Windows or SQL)             * Its Server Roles             * Every database to which the login is mapped             * The associated "Database User" for this …
Long way back, we had to take help from third party tools in order to encrypt and decrypt data.  Gradually Microsoft understood the need for this feature and started to implement it by building functionality into SQL Server. Finally, with SQL 2008, …
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question