Just use the SQL keyword. The load will return no data but that is not a problem. For example
// create temp table (no data returned)
SELECT * into #temp
// do some manipulation to the temp table (no data returned)
// Now get the data into QV
SQL SELECT * FROM #temp;
DISCONNECT; //#temp out of scope after disconnect, so the resources used are released
The #temp table remains in scope for the duration of a single database connection. Make sure that the connection has the necessary permissions to create temp tables.