Upload tool MYSQL query issue

Upload tool MYSQL query issue

I'm trying to upload from my MSQLD database with a query that changes the names of the columns to match my Zoho table.  

The query I'm using in database_sql_queries.xml is:

  2.     SELECT count_endtime AS DATE,
  3. REPLACE (customer_id, '514', 'OZ')AS SITE,
  4. count_in AS InCount,
  5. count_out AS OutCount,
  6. count_occupancy AS Occupancy
  7.       FROM `zone_activity` where customer_id = '514'  
  8.       ORDER BY `zone_activity`.`count_endtime` DESC
This query fundamentally works, but it only changes the name of the customer_id column.  The other columns in the resulting csv do not get renamed.  Is this a limitation in the upload tool?