Solved

using field in select statement

Posted on 2013-05-29
7
295 Views
Last Modified: 2013-05-29
in the select statement below I set up a field AS VolumeDiscount. I would like to use VolumeDiscount in the same select statement right after. How would I do this?

SELECT     cod.OrderDetailsID, cod.OrderID, cod.DeliveryDateRequest, cod.GrowthStageID, cod.StandingOrder, cod.Comments, cod.Quantity, cod.ClientSpecialDiscount, 
                      cod.ResellerSpecialDiscount, cod.ProductID, 
                      CASE cod.GrowthStageID WHEN 3 THEN p.ProductPrice - 2 WHEN 2 THEN p.ProductPrice - 1 ELSE p.ProductPrice END AS ProductPrice
,CASE WHEN cod.Quantity < 5 THEN 0 WHEN cod.Quantity < 10 THEN 0.05 ELSE 0.1 END AS VolumeDiscount
,(p.ProductPrice-p.ProductPrice*VolumeDiscount)-((p.ProductPrice-p.ProductPrice*VolumeDiscount)*po.PaymentDiscount) AS UnitPrice
FROM         WW.ClientOrderDetails AS cod INNER JOIN
                      WW.Products AS p ON cod.ProductID = p.ProductID INNER JOIN
                      WW.TaxCategories AS tc ON p.TaxCategoryID = tc.TaxCategoryID INNER JOIN
                      WW.ClientOrders AS co ON cod.OrderID = co.OrderID INNER JOIN
                      WW.PaymentOptions AS po ON co.PaymentOptionID = po.PaymentOptionID
WHERE     (cod.OrderID = 401001)

Open in new window

0
Comment
Question by:Shawn
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 23

Expert Comment

by:nemws1
ID: 39206080
Unfortunately, you'll have to duplicate your CASE statement.
0
 
LVL 75

Accepted Solution

by:
Aneesh Retnakaran earned 500 total points
ID: 39206087
You cannot use it with your current query, you need some thing like this
SELECT * ,(p.ProductPrice-p.ProductPrice*VolumeDiscount)-((p.ProductPrice-p.ProductPrice*VolumeDiscount)*po.PaymentDiscount) AS UnitPrice

FROM (
SELECT     cod.OrderDetailsID, cod.OrderID, cod.DeliveryDateRequest, cod.GrowthStageID, cod.StandingOrder, cod.Comments, cod.Quantity, cod.ClientSpecialDiscount,
                      cod.ResellerSpecialDiscount, cod.ProductID,
                      CASE cod.GrowthStageID WHEN 3 THEN p.ProductPrice - 2 WHEN 2 THEN p.ProductPrice - 1 ELSE p.ProductPrice END AS ProductPrice
,CASE WHEN cod.Quantity < 5 THEN 0 WHEN cod.Quantity < 10 THEN 0.05 ELSE 0.1 END AS VolumeDiscount
FROM         WW.ClientOrderDetails AS cod INNER JOIN
                      WW.Products AS p ON cod.ProductID = p.ProductID INNER JOIN
                      WW.TaxCategories AS tc ON p.TaxCategoryID = tc.TaxCategoryID INNER JOIN
                      WW.ClientOrders AS co ON cod.OrderID = co.OrderID INNER JOIN
                      WW.PaymentOptions AS po ON co.PaymentOptionID = po.PaymentOptionID
WHERE     (cod.OrderID = 401001)
)A
0
 
LVL 68

Expert Comment

by:Qlemo
ID: 39206112
You can also define the inner select as a CTE, or a view, or like above, it remains the same. Only by using some intermediate table you can reuse results of expressions.
0
NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

 
LVL 1

Author Comment

by:Shawn
ID: 39206120
aneeshattingal
looks good but I'm getting the following error:
The multi-part identifier "p.ProductPrice" could not be bound.
0
 
LVL 68

Expert Comment

by:Qlemo
ID: 39206132
Remove the p.'s from the first select column list.
0
 
LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 39206135
Or change the alias A to p

WHERE     (cod.OrderID = 401001)
)A
 ------------------>
WHERE     (cod.OrderID = 401001)
)P

also remove the 'PO.'
0
 
LVL 1

Author Comment

by:Shawn
ID: 39206179
that worked niceley. just had to add po.PaymentDiscount in the other select query.
thank you!
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
SQL Login 17 40
What is format f12.8 for a CSV file 6 41
SQL - SP needs a little help 9 22
SQL bit field not working as expected 3 21
Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.

920 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

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now