"SELECT TOP", "LEFT OUTER JOIN", "ORDER BY" gives extra rows

Posted by Codesleuth on Stack Overflow See other posts from Stack Overflow or by Codesleuth
Published on 2010-03-09T09:37:29Z Indexed on 2010/03/09 9:51 UTC
Read the original article Hit count: 371

Filed under:

access

|

sql

|

select

|

order-by

|

left-join

I have the following Access query I'm running through OLE DB in .NET:

SELECT  TOP 25 
        tblClient.ClientCode, 
        tblRegion.Region
FROM    (tblClient LEFT OUTER JOIN
            tblRegion ON tblClient.RegionCode = tblRegion.RegionCode)
ORDER BY tblRegion.Region

There are 431 records within tblClient that have RegionCode set to NULL.
For some reason, the query above returns all these 431 records instead of the first 25.

If I change the query to ORDER BY tblClient.Client (the name of the client) like so:

SELECT  TOP 25
        tblClient.ClientCode,
        tblRegion.Region
FROM    (tblClient LEFT OUTER JOIN
            tblRegion ON tblClient.RegionCode = tblRegion.RegionCode)
ORDER BY tblClient.Client

I get the expected result set of 25 records, showing a mixture of region names and NULL values.

Why is it that ordering by a field retrieved through a LEFT OUTER JOIN will the TOP clause not work?

© Stack Overflow or respective owner

Related posts about access

Postgres user drop

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to drop a user: drop user testUser; I want to force this to work in a simple manner (Not a million calls)... How can I do this easily? I get this output: ERROR: role "testUser" cannot be dropped because some objects depend on it DETAIL: access to table main.tap_db_version access… >>> More
Postgres user/role drop

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to drop a user: drop user testUser; I want to force this to work in a simple manner (Not a million calls)... How can I do this easily? I get this output: ERROR: role "testUser" cannot be dropped because some objects depend on it DETAIL: access to table main.tap_db_version access… >>> More
ASA hairpining: I basicaly want to allow 2 spokes to be able to communicate with each other.

as seen on Server Fault - Search for 'Server Fault'
ASA Spoke to Spoke Communication I have been looking at spke to spoke comms or "hairpining" for months and have posted on numerouse forums but to no avail. I have a Hub and spoke network where the HUB is an ASA Firewall version 8.2 * I basicaly want to allow 2 spokes to be able to communicate with… >>> More
.NET Access automation with Access 2007 Runtime

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm having trouble deploying .NET application which uses Microsoft Access automation. I've installed the Access 2007 Runtime and Primary Interop Assemblies (PIAs) on the target machine: Access 2007 Runtime Office 2007 PIAs However, when I try to create the ApplicationClass: Application access… >>> More
Cisco 800 series won't forward port

as seen on Server Fault - Search for 'Server Fault'
Hello ServerFault, I am trying to forward port 444 from my cisco router to my Web Server (192.168.0.2). As far as I can tell, my port forwarding is configured correctly, yet no traffic will pass through on port 444. Here is my config: ! version 12.3 service config no service pad service tcp-keepalives-in service… >>> More

Related posts about sql

SQL SERVER – Concat Strings in SQL Server using T-SQL – SQL in Sixty Seconds #035 – Video

as seen on SQL Authority - Search for 'SQL Authority'
Concatenating string is one of the most common tasks in SQL Server and every developer has to come across it. We have to concat the string when we have to see the display full name of the person by first name and last name. In this video we will see various methods to concatenate the strings. SQL… >>> More
SQL SERVER – Concat Function in SQL Server – SQL Concatenation

as seen on SQL Authority - Search for 'SQL Authority'
Earlier this week, I was delivering Advanced BI training on the subject of “SQL Server 2008 R2″. I had great time delivering the session. During the session, we talked about SQL Server 2010 Denali. Suddenly one of the attendees suggested his displeasure for the product. He said, even though… >>> More
Error with SQL Server Setup 2012 on Windows 2012

as seen on Server Fault - Search for 'Server Fault'
I am trying to install SQL Server on Windows 2012. I was able to finally get the wizard up and running after making some changes on the server, but now it fails no matter what I do with the following error: TITLE: SQL Server Setup failure. SQL Server Setup has encountered the following error: … >>> More
How can I detect which version of SQL (eg SQL 2008 or SQL Azure)

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to detect which version of SQL I am dealing with to perorm various tasks, I need specifically detect if I am on SQL 2008 or SQL Azure. How can I do this with detection code written in SQL? >>> More
Nested SQL Select statement fails on SQL Server 2000, ok on SQL Server 2005

as seen on Stack Overflow - Search for 'Stack Overflow'
Here is the query: INSERT INTO @TempTable SELECT UserID, Name, Address1 = (SELECT TOP 1 [Address] FROM (SELECT TOP 1 [Address] FROM [UserAddress] ua INNER JOIN UserAddressOrder uo ON ua.UserID = uo.UserID WHERE ua.UserID = u.UserID ORDER BY uo.AddressOrder ASC) q ORDER BY AddressOrder… >>> More