title: select * count(id) num from table_name
body: <p>we can do it,</p>
  
  <blockquote>
    <p>eg:select * ,count(id) from table_name </p>
  </blockquote>
  
  <p>but select count(id),* from table_name is wrong.why the * must put the first ?</p>
  
  <blockquote>
    <p>eg:select count(id),* from table_name </p>
  </blockquote>