title: add bool column within existing table
body: <p>I am trying to dd a column, to a database with the program Microsoft SQL Server Management Studio.</p>
  
  <p>I already have a database, with a table, in that table i need to add another column.. but it keeps saying it cannot find type bool or boolean.</p>
  
  <p>my code : </p>
  
  <pre><code>ALTER TABLE table_name ADD IsOpen boolean GO
  </code></pre>
  
  <p>Any ideas ?</p>
  
  <p>side question, any idea how to alter an existing column ? i have a column called "budget" but it needs to be "Budget". </p>