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

x
?
Solved

How do I Query the Result Set of a Query in MS SQL 2000

Posted on 2007-11-22
4
Medium Priority
?
215 Views
Last Modified: 2010-04-21
I'd like some advice on how to create a query.

In my stored procedure, I've got several variables which are used to form a query.  The query is created as a string and then executed:

CREATE PROCEDURE [dbo].[prcGetUCC]
-- Declare input paramters
@SortExp VARCHAR(100) = NULL,
@Branch VARCHAR(20) = NULL,
@BranchJ VARCHAR(20) = NULL

IF @Branch ='All'
    BEGIN
    SET @SQLStatement='SELECT * FROM vUCC ORDER BY ' + @SortExp + ' ASC'
    END
ELSE
    BEGIN
    SET @SQLStatement='SELECT * FROM vUCC WHERE BoO = ''' + @BranchJ + ''' OR
    BoO = ''' + @Branch1 + ''' OR BoO = ''' + @Branch9 + ''' ORDER BY ' + @SortExp + ' ASC'
    END
EXEC (@SQLStatement)

What I want to do is then query the results of this query and further filter the data.  Something like this:

SELECT * FROM (The Result Set of the Previous Query) WHERE ColumnA = ValueB

Is this at all possible?
0
Comment
Question by:Joseph Hornsey
  • 2
4 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 1600 total points
ID: 20337585
yes, but you have to include it in the dynamic sql altogether:

CREATE PROCEDURE [dbo].[prcGetUCC]
-- Declare input paramters
@SortExp VARCHAR(100) = NULL,
@Branch VARCHAR(20) = NULL,
@BranchJ VARCHAR(20) = NULL 
AS
SET NOCOUNT ON
IF @Branch ='All'
    BEGIN
    SET @SQLStatement='SELECT * FROM vUCC ORDER BY ' + @SortExp + ' ASC'
    END
ELSE
    BEGIN
    SET @SQLStatement='SELECT * FROM vUCC WHERE BoO = ''' + @BranchJ + ''' OR
    BoO = ''' + @Branch1 + ''' OR BoO = ''' + @Branch9 + ''' ORDER BY ' + @SortExp + ' ASC'
    END 
SET @sqlstatement = 'SELECT * FROM (' + @sqlstatement + ') l WHERE ColumnA = ValueB ' 
EXEC (@SQLStatement)

Open in new window

0
 
LVL 14

Author Comment

by:Joseph Hornsey
ID: 20337597
No way.  Really?

So, you can really SELECT Value FROM (SELECT DiffValue FROM DiffTable) WHERE This = That?

I'll try this in the morning and will post back.  Unfortunately, I'm beat.

Thanks!

<-=+=->
0
 
LVL 25

Assisted Solution

by:imitchie
imitchie earned 400 total points
ID: 20337665
SELECT * FROM (The Result Set of the Previous Query) ALIAS WHERE ColumnA = ValueB

As long as you give it an alias. Angel's sample names it as L (lowercase). It can be used just like a normal "table", so you can even reference fields in it.
Take care that if you alias the columns, then you reference by alias, not original name. i.e.

SELECT * FROM ( SELECT Cost * 1.4 as SalePrice, ProductName FROM PRODUCTS) ProdAndSalePrice WHERE SalePrice > 100
0
 
LVL 14

Author Closing Comment

by:Joseph Hornsey
ID: 31410632
I've split the points because I didn't notice the lower-case L in angel's example.  If imitchie hadn't clarified that, I would have totally missed it.

Thank you both so much for your help!

By the way, is this an example of a "derived table"?

<-=+=->
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

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

If you find yourself in this situation “I have used SELECT DISTINCT but I’m getting duplicates” then I'm sorry to say you are using the wrong SQL technique as it only does one thing which is: produces whole rows that are unique. If the results you a…
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Screencast - Getting to Know the Pipeline

877 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