SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier samples
   Function in (children 1)
    ExpressionList (children 2)
     Identifier value
     Function range (children 1)
      ExpressionList (children 1)
       Literal UInt64_3
