Improve company productivity with a Business Account.Sign Up

x
?
Solved

Decimal from datediff and Sum

Posted on 2006-07-01
6
Medium Priority
?
624 Views
Last Modified: 2008-03-06
I have:


qry1)

select
      Disposition,
               AssessmentDate,
      DateDischarged,
      datediff (dd, AssessmentDate, DateDischarged)/30
from Demo
where (DateDischarged is not null and DateDischarged != '')

qry2)

select Disposition, count (Disposition)
from Demo
where (DateDischarged is not null and DateDischarged != '')
group by Disposition

How do you combine these two so that  I dispaly all of the contents from qry 1 and put the count of each 'Disposition' group at the bottom?

for instance, it will looks like:

ALF      2002-02-05       2003-01-14       11
ALF      2004-05-12       2004-07-16       2
ALF      2004-11-05       2005-03-30       4
ALF      2004-11-05       2005-03-30       4

             COUNT                           4

Dischared      2004-10-01       2004-10-22       0
Dischared      2004-12-09       2005-03-17       3
Dischared      2004-04-30       2005-09-30       17
Dischared      2005-01-13       2005-04-11       2
Dischared      2005-02-28       2005-09-30       7
Dischared      2005-04-25       2005-08-19       3
Dischared      2005-04-25       2005-08-19       3

             COUNT                           8        

Also, on datediff (dd, AssessmentDate, DateDischarged)/30, I want to have 10th decimal from the calculation.
0
Comment
Question by:ethanjohnsons
6 Comments
 
LVL 5

Expert Comment

by:CIC Admin
ID: 17024345
You would get more control of your output to program this in the report generator of your application, e.g. MS Access, Crystal, etc.

If you want to do this solely in Transact SQL, you may want to look at using COMPUTE.

You can try something like :

select
     Disposition,
     AssessmentDate,
     DateDischarged,
     datediff (dd, AssessmentDate, DateDischarged)/30
from Demo
where (DateDischarged is not null and DateDischarged != '')
order by Disposition
compute count(disposition) by disposition

You can read more about COMPUTE here : http://msdn2.microsoft.com/en-us/library/ms181708.aspx

As for adding a tenth decimal to your datediff, change :

   datediff (dd, AssessmentDate, DateDischarged)/30

to

   convert (decimal(6,1), datediff (dd, AssessmentDate, DateDischarged)/30 )

But keep in mind that it will always be xxx.0 since days will always be in whole numbers.
0
 

Author Comment

by:ethanjohnsons
ID: 17024629
datediff returns:

343
65
145
.....

If you divide by 30, it shoud return the decimals.  How do you get the decimals?
0
 
LVL 5

Accepted Solution

by:
CIC Admin earned 1400 total points
ID: 17024882
Sorry, was totally overlooking the division by 30.  

Try this :

convert(numeric(7,1), convert(float, datediff (dd, AssessmentDate, DateDischarged))/30 )
0
What Kind of Coding Program is Right for You?

There are many ways to learn to code these days. From coding bootcamps like Flatiron School to online courses to totally free beginner resources. The best way to learn to code depends on many factors, but the most important one is you. See what course is best for you.

 
LVL 50

Assisted Solution

by:Lowfatspread
Lowfatspread earned 200 total points
ID: 17024947
convert(decimal(6,1), datediff (dd, AssessmentDate, DateDischarged))/30.0
0
 
LVL 28

Assisted Solution

by:imran_fast
imran_fast earned 400 total points
ID: 17026040
try this

select
     Disposition,
     AssessmentDate,
     DateDischarged,
     cast (cast(datediff (dd, AssessmentDate, DateDischarged) as decimal(6,1))/30 as decimal(6,1))
from Demo
where (DateDischarged is not null and DateDischarged != '')
order by Disposition
compute count(disposition) by disposition
0
 

Author Comment

by:ethanjohnsons
ID: 17028514
great!  works fine.
0

Featured Post

A proven path to a career in data science

At Springboard, we know how to get you a job in data science. With Springboard’s Data Science Career Track, you’ll master data science  with a curriculum built by industry experts. You’ll work on real projects, and get 1-on-1 mentorship from a data scientist.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

One of the most important things in an application is the query performance. This article intends to give you good tips to improve the performance of your queries.
In this article, we will see two different methods to recover deleted data. The first option will be using the transaction log to identify the operation and restore it in a specified section of the transaction log. The second option is simpler and c…
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.
SQL Database Recovery Software repairs the MDF & NDF Files, corrupted due to hardware related issues or software related errors. Provides preview of recovered database objects and allows saving in either MSSQL, CSV, HTML or XLS format. Ensures recov…

608 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