title: I have a Three columns in the SQL table, I want to show the sum of the total of two columns in the third column. MYSQL
body: <p>How can I show that using MySQL query.</p>
  <p>Need Create Script</p>
  <p>Table Structure:</p>
  <p>Col1 int
  Col2 int
  Col3 as col1+col2</p>
  <p>my query</p>
  <pre><code>CREATE TABLE T1(
      Col1 integer,
      col2 integer,
      col3   as (Col1+col2)
  );
  </code></pre>
  <p>error: Error: near line 1: near &quot;as&quot;: syntax error</p>