title: Add column2 before column1
body: <p>i have table structure with 3 colums (column1, column2, column3) and i want to put another column with  sql statement like:</p>
  
  <pre><code>alter table tbl_name add column4 
  </code></pre>
  
  <p>but i need to put it between column1 and column2</p>
  
  <p>may i do something like in MYSQL: </p>
  
  <pre><code>alter table tbl_name add column4 after column1
  </code></pre>