title: Sql datatype for both character and integer
body: <p>So I just started sql. There is <code>int</code> for integers, <code>character</code> for character <code>string</code> and <code>varchar</code> for either integer or character. Is there a datatype using which I can input both the types together( e.g., A10) ? If not is there an alternative way of doing so?</p>