...

      while (<$fh>) {
         last if (/END SQL_REPORT_ID/) ;

         $Sql .= "$_";
      }
      sleep 1;

      ...

##</code><code>##

Generated 1: foo 1
Generated 2: foo 2
Generated 3: foo 3
Generated 4: foo 4
Generated 2: foo 2
Generated 3: foo 3
Generated 4: foo 4
(2..4 repeated ad infinitum...)

##</code><code>##

SQL_REPORT_ID 1
foo 1
END SQL_REPORT_ID

SQL_REPORT_ID 2
foo 2
END SQL_REPORT_ID

SQL_REPORT_ID 3
foo 3
END SQL_REPORT_ID

SQL_REPORT_ID 4
foo 4
END SQL_REPORT_ID