statistic: more stable test for query test (#10386)
statistic: more stable test for query test (#10386)

* more stable test

Signed-off-by: lhy1024 <admin@liudos.us>

* more stable test

Signed-off-by: lhy1024 <admin@liudos.us>

Co-authored-by: Ti Chi Robot <040e6455cde1c91e876ec337e785ce913eacba35@tidb.io>
BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv