Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

losing precision in a calculated column

Posted on 2010-08-17
3
Medium Priority
?
265 Views
Last Modified: 2012-05-10
The below query is an example of something I'm struggling with. It produces output like the following:

2052035      10      5      2
5036064      12      5      2
4016002      16      5      3
1010001      23      5      4
5031669      13      5      2
5031163      21      5      4

As you can see from the query, the last column is a calculated column which should give the 2nd column divided by the 3rd column.

I am trying to get the last column to give the exact DECIMAL amount, not an INTEGER. This is why I am trying to cast it etc.

How can I get the exact amount, ie. a decimal type here in this column, not an int ?

We are using SQL Server 2000
select EA.ex_pi_eval_answer_school_id, 
SUM(EA.ex_pi_eval_answer_response), 
COUNT(EA.ex_pi_eval_answer_response),
CAST(SUM(EA.ex_pi_eval_answer_response) / COUNT(EA.ex_pi_eval_answer_response) AS MONEY)

from tbl_ex_ProgramImpact_eval_answers EA

where EA.ex_pi_eval_answer_ProgramObjective_id = 1

group by EA.ex_pi_eval_answer_school_id

Open in new window

0
Comment
Question by:zorba111
  • 2
3 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 2000 total points
ID: 33454940
try this, please
CAST( SUM(EA.ex_pi_eval_answer_response) as MONEY) / CAST(COUNT(EA.ex_pi_eval_answer_response) AS DECIMAL(20,4))

Open in new window

0
 

Author Comment

by:zorba111
ID: 33455011
Got it!!
This works... I remembered from somewhere that the default is to take the type of the first argument of any operator, and cast the result of an expression to that...

select EA.ex_pi_eval_answer_school_id,
SUM(CAST(EA.ex_pi_eval_answer_response AS DECIMAL)),
COUNT(EA.ex_pi_eval_answer_response),
SUM(CAST(EA.ex_pi_eval_answer_response AS DECIMAL)) / COUNT(EA.ex_pi_eval_answer_response)

from tbl_ex_ProgramImpact_eval_answers EA

where EA.ex_pi_eval_answer_ProgramObjective_id = 1

group by EA.ex_pi_eval_answer_school_id
0
 

Author Comment

by:zorba111
ID: 33455035
@angell

yours works too, also when simplified to:

SUM(EA.ex_pi_eval_answer_response) / CAST(COUNT(EA.ex_pi_eval_answer_response) AS DECIMAL(20,4))
0

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

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

A Stored Procedure in Microsoft SQL Server is a powerful feature that it can be used to execute the Data Manipulation Language (DML) or Data Definition Language (DDL). Depending on business requirements, a single Stored Procedure can return differe…
Windocks is an independent port of Docker's open source to Windows.   This article introduces the use of SQL Server in containers, with integrated support of SQL Server database cloning.
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
Via a live example, show how to shrink a transaction log file down to a reasonable size.

876 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