title: Sybase SQL - Regular expression escaping metacharacters
body: <p>I'm using Sybase SQL (ASA) and currenty I'm working with regular expressions.</p>
  
  <p>My task is to check strings if they only contains numbers, '+','-' or '/'
  like following string: '+49176/3421094'</p>
  
  <p>My statement looks something like that (just a test):</p>
  
  <pre><code>Select * from (select '+49176/3421094' Tele from dummy) a
  where Tele SIMILAR TO '[0-9/-\+]*'
  </code></pre>
  
  <p>In the documentation it says that metacharacters have to be escaped with '\' but if I execute this statement an sql error is thrown with the message "unknown metacharacter".</p>
  
  <p>My question is: How do I have to escape metacharacters (espacially in classes []) ?</p>