title: Proc SQL with space in the column name
body: <p>How I can use column with space in the name ('library name') in <code>PROC SQL</code> in SAS?</p>
  
  <pre><code>proc sql outobs=10;
      select *
      from sashelp.vtable 
      where library name = xxx
      ;
  run;
  </code></pre>
  
  <p>I tried:</p>
  
  <pre><code>proc sql outobs=10;
      select *
      from sashelp.vtable 
      where 'Libname'n = test_lin;
  quit;
  
  proc sql outobs=10;
      select *
      from sashelp.vtable 
      where 'library name'n = test_lin;
  quit;
  
  proc sql outobs=10;
      select *
      from sashelp.vtable 
      where libname = test_lin;
  quit;
  </code></pre>
  
  <blockquote>
    <p>ERROR: The following columns were not found in the contributing
    tables: test_lin.</p>
  </blockquote>
  
  <p><a href="http://postimg.org/image/ajthgw6g1" rel="nofollow noreferrer">sashelp.vtable</a></p>
  
  <p>Variable Name: <code>libname</code></p>
  
  <p>Variable Label: <code>Library Name</code></p>