title: sort error at end of proc sql for inner join
body: <p>I ran the following code and an hour later, just as the code was finishing a sort execute error occurred. Is there something wrong with my code or is my computer processor and Ram insufficient</p>
  
  <pre><code>proc sql;
  
  create table today as
  
  select a.account_number, a.client_type, a.device ,a.entry_date_est,
  
      a.entry_time_est, a.duration_seconds, a.channel_name, b.esn, b.service_start_date,
  
      b.service_end_date, b.product_name, b.billing_frequency_fee, b.plan_category,
  
      b.plan_subtype, b.plan_type
  
      from listen_nomiss a  inner join service_nomiss b
  
      on (a.account_number = b.account_number)
  
      order by account_number;
  
  quit;
  </code></pre>