results in server crash 
 
check_group_min_max_predicates() assumed the input condition 
item to be one of COND_ITEM, SUBSELECT_ITEM, or FUNC_ITEM. 
Since a condition of the form "field" is also a valid condition 
equivalent to "field <> 0", using such a condition in a query 
where the loose index scan was chosen resulted in a debug 
assertion failure. 
 
Fixed by handling conditions of the FIELD_ITEM type in 
check_group_min_max_predicates(). 

mysql-test/r/group_min_max.result:
  Added a test case for bug #46607.
mysql-test/t/group_min_max.test:
  Added a test case for bug #46607.
sql/opt_range.cc:
  Handle conditions of the FUNC_ITEM type in 
  check_group_mix_max_predicates().