Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

TSQL Query

Posted on 2014-12-21
1
Medium Priority
?
145 Views
Last Modified: 2014-12-22
a question for a where statement in TSQL, what does escape '\\ mean ??

where A.PRODID NOT LIKE '%\-%' escape '\'  AND
0
Comment
Question by:AXISHK
[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 23

Accepted Solution

by:
Steve Wales earned 2000 total points
ID: 40512420
There are some characters in the Sql pattern matching scenario that are special.

A percent sign for example is a wildcard that matches any string of 0 or more characters.

So how do you handle it when you need to search specifically for a '%' ?

This is where the escape keyword comes in.  You can tell the database that any time you see the escape character in the pattern followed by a wildcard character then that wildcats should be treated as a regular character instead.

The hyphen/dash character doesn't have any special meaning as far as I can recall so in your example it is looking for any string with a dash in it.  The percent signs are wild cards and since the backslash is the escape character it says that the dash should be treated exactly as a dash and not perform anything special.

Have a read of the books online article on using LIKE with ESCAPE.

Http://msdn.microsoft.com/en-us/library/ms179859.aspx
0

Featured Post

The Orion Papers

Are you interested in becoming an AWS Certified Solutions Architect?

Discover a new interactive way of training for the exam.

Question has a verified solution.

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

In this article I will describe the Backup & Restore method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

722 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