Using WildCard character _ in sql expression

Question

0.00/5 (No votes)

See more:

Hi,

I have a following file names in my database.
TestDocument _ 1 _ 0
TestDocument _ Evidence
Test45

when i am entering the Test_ in the DocumentName textbox it is forst converted to uppercase and send to the query and query has following expression which returns all record where it shouldn't return any record.
please tell me the changes in the following expression.

UPPER(DOC.ORIGINAL_FILE_NAME) like '%TEST_%'

Thanks,
Umesh Tayade

Posted 23-May-11 3:41am

Member 4550493

Updated 23-May-11 5:22am

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

bob4096 · Answer 1 · 2011-05-23T05:49:00

Solution 1

In t-SQL the underscore, "_", is also a wildcard character. While the percent sign, "%", accepts any values in any number of characters, the underscore accepts any value for exactly one character.

Posted 23-May-11 5:49am

bob4096

Thomas Krojer · Answer 2 · 2011-05-23T05:56:00

Solution 2

maybe this link is helpful (how to escape the _ char ...):

http://sqlserver2000.databases.aspfaq.com/how-do-i-search-for-special-characters-e-g-in-sql-server.html

Posted 23-May-11 5:56am

Thomas Krojer