WITH task_started
     AS (SELECT 'POP_FS_NEW' AS task_id, '2/2/2015 11:33:28 AM' AS task_started FROM DUAL
         UNION
         SELECT 'INDEXING_FS_NEW' AS task_id, '2/2/2015 10:08:02 PM' AS task_started FROM DUAL
         UNION
         SELECT 'STAT_FS_NEW' AS task_id, '2/2/2015 11:45:31 PM' AS task_started FROM DUAL),
     task_complete
     AS (SELECT 'POP_FS_NEW' AS task_id, '2/2/2015 1:09:04 PM' AS task_complete FROM DUAL
         UNION
         SELECT 'INDEXING_FS_NEW' AS task_id, '2/2/2015 11:42:42 PM' AS task_complete FROM DUAL
         UNION
         SELECT 'STAT_FS_NEW' AS task_id, '2/3/2015 10:00:45 AM' AS task_complete FROM DUAL)
SELECT task_started.task_id,
       task_started.task_started,
       task_complete.task_complete
  FROM task_started INNER JOIN task_complete ON task_started.task_id = task_complete.task_id