Solved

SQL-stmt

Posted on 2001-07-18
7
266 Views
Last Modified: 2008-03-06
Have a View with fields:

ID (PK)
Date_Field (Date)
Date_Month (Extracts the month from above date)
Date_Yr (Extracts the year from above date)
Amt

The data is collected on a monthly basis, also the data might miss for some months.

I want to write a sql that for a given year gives me the latest data for that year.

ie, lets say data was collected for Jan, Feb, May for 2001

If the sql was ran today the output would be May's value (ie. the data was recorded in May for yr-2001)
0
Comment
Question by:debbie790
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 2

Expert Comment

by:UncleMatt
ID: 6296109
Select * from view where Date_yr = Year(getdate()) and date_month = (Select max(date_month) from view where Date_yr = Year(getdate()))

It's probably not the best way to do it but it should work!

Matt.
0
 
LVL 3

Expert Comment

by:ibro
ID: 6297141
Select * from myview where Date_field=( select max(Date_field) from myview)

Can you have more than 1 record with the same date? If not the above will do your work.
0
 

Author Comment

by:debbie790
ID: 6298270
Firstly, it is not possible to have > 1 record with the same date.

Also, the above solutions didnt work:

myView:
ID (PK)
DeptID
Date_Field (Date)
Date_Month (Extracts the month from above date)
Date_Yr (Extracts the year from above date)
Amt

SELECT * FROM myView
WHERE DateField = ( SELECT MAX(Date_field) FROM myview WHERE DeptID = 100)

The above gave me all records -- repeating them 3-times.

0
Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

 
LVL 3

Expert Comment

by:ibro
ID: 6298357
Hi debbie790,
 As far as I understand your explanation [it is not possible to have > 1 record with the same date], it seems that data field is unique in the myView. Is this true.
If it is, then the statement will give you only one record, which will be the recent one.
There is probable something that you didnt mention...
Since the above query doesnt work for you, what is your unique value? Is it DeptID+Date_field. If it is the statement shall look like this:

SELECT * FROM myView
WHERE DepID=100 and DateField = ( SELECT MAX(Date_field) FROM myView WHERE DeptID = 100)

Btw is your SQL7 configured as case-sensitive or case-insensitive? Are "myView" and "myview" same views or different? [in your statemnt in main query is "myView" and in subquery "myview"]


0
 
LVL 2

Expert Comment

by:UncleMatt
ID: 6299148
What format is date_month?

Is it the numeric month value?

If so, what was the problem with my solution?
0
 

Expert Comment

by:arak_69
ID: 6324182
Select *
From MyView
Where Date_Field =
        (SELECT Max(Date_Field )
         FROM MyView
         WHERE Date_Yr  = My_Year)

It will return you only records for last date for given year in that database

If You Need it For whole Month
Select *
From MyView
Where Date_Month =
        (SELECT Max(Date_Month )
         FROM MyView
         WHERE Date_Yr  = My_Year)
AND Date_Yr  = My_Year


0
 

Accepted Solution

by:
arak_69 earned 50 total points
ID: 6324184
Select *
From MyView
Where Date_Field =
       (SELECT Max(Date_Field )
        FROM MyView
        WHERE Date_Yr  = My_Year)

It will return you only records for last date for given year in that database

If You Need it For whole Month
Select *
From MyView
Where Date_Month =
       (SELECT Max(Date_Month )
        FROM MyView
        WHERE Date_Yr  = My_Year)
AND Date_Yr  = My_Year
0

Featured Post

Free eBook: Backup on AWS

Everything you need to know about backup and disaster recovery with AWS, for FREE!

Question has a verified solution.

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

Introduction In my previous article (http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SSIS/A_9150-Loading-XML-Using-SSIS.html) I showed you how the XML Source component can be used to load XML files into a SQL Server database, us…
For both online and offline retail, the cross-channel business is the most recent pattern in the B2C trade space.
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

685 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