Solved

Avoid records with underscore

Posted on 2014-11-27
1
119 Views
Last Modified: 2014-11-27
Hi experts,

I need to perform a mysql query to retrieve all records that not contains an underscore into a string.
So 12345 should be taken ; 12345_blue should be rejected.

I use the following query but it is to much time consumming (due to the use of LIKE)
select jcId from jcstktabl where jcid not like '%\_%'

Open in new window


I would like to replace this with a version without like clause, for performance concern.

EDIT : I know using like with a leadind joker is bad, but I don't find another way :(

Thanks a lot
0
Comment
Question by:adam1h
[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
1 Comment
 
LVL 51

Accepted Solution

by:
Huseyin KAHRAMAN earned 500 total points
ID: 40469029
try

INSTR(jcid, '_')=0

or this one...

LOCATE(jcid, '_')=0
0

Featured Post

The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

Question has a verified solution.

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

Suggested Solutions

More Fun with XML and MySQL – Parsing Delimited String with a Single SQL Statement Are you ready for another of my SQL tidbits?  Hopefully so, as in this adventure, I will be covering a topic that comes up a lot which is parsing a comma (or other…
Foreword This is an old article.  Instead of using the MySQL extension that was used in the original code examples, please choose one of the currently supported database extensions instead.  More information is available here: MySQLi / PDO (http://…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

749 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