You can cancel (close)
an OLAP query result set with the CANCEL QUERY statement.
CANCEL QUERY id | _ALL_ [INACTIVE=seconds];
The ID is the unique
result set identifier returned from the LIST QUERIES statement. Canceling
a query stops the query processing and closes the result set on the
server. If the _ALL_ keyword is specified, then all open query result
sets are closed. If the INACTIVE option is specified, then only queries
inactive for the specified duration are canceled.