Solved

delete records not working correctly in transact sql

Posted on 2012-03-13
5
305 Views
Last Modified: 2012-03-13
I have a table with a column named filename. I am trying to delete all of my records that start with a "9-" except not delete records that start with "9-5400". This statement doesn't work:

delete from tblmaster where substring(filename,1,2) = '9-' and substring(filename,1,6) != '9-5400'

Can someone help me rephrase this string so it ignores the 9-5400 but deletes everything else that starts with 9-.

Thanks!
0
Comment
Question by:samic400
5 Comments
 
LVL 15

Accepted Solution

by:
Anuj earned 500 total points
ID: 37714728
delete from tblmaster where LEFT(Filename,2) = '9-' and LEFT(Filename,6) != '9-5400'
0
 
LVL 40

Expert Comment

by:lcohan
ID: 37714786
Try this then replace select with delete

select * from tblmaster
where substring(ltrim(filename),1,2) = '9-' and substring(ltrim(filename),1,6) != '9-5400'
0
 
LVL 25

Expert Comment

by:jogos
ID: 37715012
A little modification on previous comment (credits!),
Always include the 'modifications' you do in the select list.  And if you don't get what you want, one by one comment out the filter until you see where the problem is.
As Icohan already suggested there could be a space before the filename

select substring(filename,1,2),substring(filename,1,6), *
from tblmaster
where substring(ltrim(filename),1,2) = '9-'
and substring(ltrim(filename),1,6) != '9-5400'


And before trying a delete .... always try it as a select first so that you can verify it is realy what you want.
0
 
LVL 25

Expert Comment

by:jogos
ID: 37715024
But I would write it as a LIKE, but it won't change the outcome.

where filename like '9-%'
and filename not like '9-5400%'
0
 
LVL 13

Author Closing Comment

by:samic400
ID: 37715043
Thank you!
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Virtual SQL Server 2014 Standard 35 94
Row insertion failed. Array 5 48
Current Month Filter in Visual Studio 10 24
SQL View / Qtry 3 13
Let's review the features of new SQL Server 2012 (Denali CTP3). It listed as below: PERCENT_RANK(): PERCENT_RANK() function will returns the percentage value of rank of the values among its group. PERCENT_RANK() function value always in be…
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…
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.
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…

808 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