How to update special characters in SQL?

Question

1.00/5 (1 vote)

See more:

Below is the query where i am trying to update my table row but it's giving me some error In Sql Server.Can someone help me how to do this

What I have tried:

update table set col='It's' where col='It'

Posted 8-Jun-17 1:38am

Member 12085957

Updated 8-Jun-17 1:42am

Add a Solution

Comments

Richard Deeming 8-Jun-17 11:21am

If you're getting that error with hard-coded values, then Solution 1 is correct.

If you're getting the error with dynamic values provided by the user, it means you're building your queries incorrectly, leaving your code vulnerable to SQL Injection.

Everything you wanted to know about SQL injection (but were afraid to ask) | Troy Hunt[^]
How can I explain SQL injection without technical jargon? | Information Security Stack Exchange[^]
Query Parameterization Cheat Sheet | OWASP[^]

1 solution

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)

ZurdoDev · Answer 1 · 2017-06-08T01:42:00

Yes, we can help you. However, for future reference, if you want help solving an error message, step 1 is to post the error message. There are 42,233,543 possible error messages so it helps to give the exact error and not make people guess.

In this case, the error is very simple. You have a single quote in the word "It's", therefore, it is breaking the string. The compiler thinks you want to update the col to be "It" and then you have "'s" and it has no idea what that means. You need to escape your apostrophe with another apostrophe.

SQL

UPDATE table SET col='It''s' WHERE col='It'

And the error message would have told you what was going on.