Cannot delete on inner join

Posted on 2008-11-02
Last Modified: 2008-12-18
I have a couple of bad records that i need to delete from my customer table and also remove the corresponding address record.
I can return all the rows I need to delete with;

select *      
from       dbo.CUSTOMER inner join            dbo.ADDRESS
on            customer.home_address = address.address_code
where      customer_code      like      '%[^0-9]%'

but changing the query above to

delete *      
from       dbo.CUSTOMER inner join            dbo.ADDRESS
on            customer.home_address = address.address_code
where      customer_code      like      '%[^0-9]%'

does not work not sure what I am missing.
Question by:sweetaz
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
LVL 22

Assisted Solution

by:Kelvin Sparks
Kelvin Sparks earned 70 total points
ID: 22864206
You cannot delete from customers while there is a corresponding record in address. Either upgrade the table relationships to allows cascade deletes between these two tables or delete the address records first, then the customer records.

LVL 17

Assisted Solution

HuyBD earned 80 total points
ID: 22864392
try this
delete dbo.CUSTOMER    
from       dbo.CUSTOMER inner join            dbo.ADDRESS
on            customer.home_address = address.address_code
where      customer_code      like      '%[^0-9]%'

Open in new window


Author Comment

ID: 22864528
thanks HuyBD b ut the query you suggest only seems to remove the records from customer table and not the address table.
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

LVL 60

Accepted Solution

Kevin Cross earned 100 total points
ID: 22866336
Kelvin's first comment is correct.  You cannot delete from both.  HuyBD's suggestion helps you with syntax on proper delete using the relationship to do the filtering, so in your case it appears that CUSTOMER table has the key to finding records to delete so you want to do this (unless you enable cascading delete from CUSTOMER to ADDRESS table.
-- delete matching addresses
INNER JOIN dbo.CUSTOMER c ON c.home_address = a.address_code
WHERE c.customer_code LIKE '%[^0-9]%'
-- delete matching customers
WHERE c.customer_code LIKE '%[^0-9]%'

Open in new window


Author Comment

ID: 22871747
thanks mwvisa1 this actually did occur to me lastnight. I should wait 24 hours before commenting! I blame monday-itis.  
LVL 60

Expert Comment

by:Kevin Cross
ID: 22872919

Featured Post

Turn Insights Into Action

You’ve already invested in ITSM tools, chat applications, automation utilities, and more. Fortify these solutions with intelligent communications so you can drive business processes forward.

With xMatters, you'll never miss a beat.

Question has a verified solution.

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

This article describes how to use the timestamp of existing data in a database to allow Tableau to calculate the prior work day instead of relying on case statements or if statements to calculate the days of the week.
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
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…
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function

691 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