SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier bftest
   Function hasAll (children 1)
    ExpressionList (children 2)
     Identifier x
     Literal Array_[Array_[UInt64_123], Int64_-42]
 Identifier Null
