title: Column segregation using datatype as parameter
body: <p>I want to know if there is a method in which we can select the columns of a table of a specific datatype in a table that has columns of various datatypes. Say a table has three columns - <code>SSN</code>, <code>Name</code> and <code>phone number</code> where <code>SSN</code> and <code>Name</code> are of <code>Varchar2</code> and <code>phone number</code> is of <code>number</code> datatype, can I extract only the columns that has its datatype as <code>varchar2</code>(<code>SSN</code> and <code>Name</code>)?</p>