title: Regex that restrict special characters, numbers and alphabets except UPPERCASE
body: <p>I want to use regex to restrict users to enter special characters, numbers  and alphabets except UPPERCASE by adding a constraint while creating a table.  User is allowed to enter only UPPERCASE alphabets. I have tried the following.</p>
  
  <pre><code>CONSTRAINT chk_spl_chars_model CHECK (Model LIKE '%[A-Z]+%')
  </code></pre>
  
  <p>This didnt work. It is not allowing to enter any value. Any Help is appreciated.</p>
  
  <p>Following is the query u yse to create table</p>
  
  <pre><code>CREATE TABLE Cars(
          Model VARCHAR(10) NOT NULL
          ,CONSTRAINT chk_spl_chars_model CHECK (Model LIKE '%^[A-Z]+$%')
  
  );  
  </code></pre>
  
  <p>This is accepting any value to be inserted even lowercase and special characters </p>