Solved

Left Join Not returning all records required.

Posted on 2004-09-22
4
434 Views
Last Modified: 2006-11-17
I have a query.....

If a record in the left join doesn't meet the criteria, it omits the record from the record set, instead of just returning a stock value of 0....

How can I fix this please?   Long Query below:
-----------------------------------------
SELECT Count(Stock.[Item Number]) AS sumofqty, OrderDetails.[Order Number], OrderDetails.[Sequence Number], OrderDetails.[Item Number], OrderDetails.Description1, OrderDetails.Description2, OrderDetails.[Qty Ordered], OrderDetails.[Qty To Ship], OrderDetails.[Qty Shipped], OrderDetails.[Unit Price], OrderDetails.[Qty Return To Stock], OrderDetails.[Unit of Measure], OrderDetails.[Unit Weight], OrderDetails.[Taxable Flag], OrderDetails.[Select Code], OrderDetails.[GST Taxable Flag], OrderDetails.[Counter Type], OrderDetails.[Pick Sequence], OrderDetails.[Shelf Life], OrderDetails.[From Warehouse]

FROM OrderDetails LEFT JOIN Stock     ON OrderDetails.[Item Number] = Stock.[Item Number] WHERE (((Stock.Warehouse)="pk") AND ((Stock.[Date Invoiced]) Is Null) AND ((Stock.[Order Number]) Is Null))

GROUP BY OrderDetails.[Order Number], OrderDetails.[Sequence Number], OrderDetails.[Item Number], OrderDetails.Description1, OrderDetails.Description2, OrderDetails.[Qty Ordered], OrderDetails.[Qty To Ship], OrderDetails.[Qty Shipped], OrderDetails.[Unit Price], OrderDetails.[Qty Return To Stock], OrderDetails.[Unit of Measure], OrderDetails.[Unit Weight], OrderDetails.[Taxable Flag], OrderDetails.[Select Code], OrderDetails.[GST Taxable Flag], OrderDetails.[Counter Type], OrderDetails.[Pick Sequence], OrderDetails.[Shelf Life], OrderDetails.[From Warehouse], OrderDetails.[Order Number], OrderDetails.[Sequence Number]

HAVING (((OrderDetails.[Order Number])=109230))

ORDER BY OrderDetails.[Order Number], OrderDetails.[Sequence Number];

---------------------------------------------
Thanks,
0
Comment
Question by:Dan Flood
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 41

Accepted Solution

by:
shanesuebsahakarn earned 500 total points
ID: 12128852
Change this:

FROM OrderDetails LEFT JOIN Stock     ON OrderDetails.[Item Number] = Stock.[Item Number] WHERE (((Stock.Warehouse)="pk") AND ((Stock.[Date Invoiced]) Is Null) AND ((Stock.[Order Number]) Is Null))

to:

FROM OrderDetails LEFT JOIN (SELECT * FROM Stock WHERE Stock.Warehouse="pk" AND Stock.[Date Invoiced] Is Null AND Stock.[Order Number] Is Null) As A ON OrderDetails.[Item Number] = A.[Item Number]

Change any references to the Stock table in the rest of the query to A.
0
 
LVL 12

Expert Comment

by:pique_tech
ID: 12128864
BIG hunch, not carefully checked:  You might be getting fouled by the HAVING clause.  Have you tried adding you Order Number criteria to the WHERE clause instead to see if that returns what you expect (without a HAVING clause altogether)?
0
 

Author Comment

by:Dan Flood
ID: 12128881
Hi,

It happened without a having clause, but i just added that so when I am running the query it will limit the about of records... with or without it it is the same... but thanks!  I just tried it again.
0
 
LVL 41

Expert Comment

by:shanesuebsahakarn
ID: 12128970
Did you try my suggestion?
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Did you know that more than 4 billion data records have been recorded as lost or stolen since 2013? It was a staggering number brought to our attention during last week’s ManageEngine webinar, where attendees received a comprehensive look at the ma…
The Windows Phone Theme Colours is a tight, powerful, and well balanced palette. This tiny Access application makes it a snap to select and pick a value. And it doubles as an intro to implementing WithEvents, one of Access' hidden gems.
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…
What’s inside an Access Desktop Database. Will look at the basic interface, Navigation Pane (Database Container), Tables, Queries, Forms, Report, Macro’s, and VBA code.

630 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