SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function toStartOfMonth (alias d32) (children 1)
     ExpressionList (children 1)
      Identifier d32
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier with_fill_date
   ExpressionList (children 1)
    Identifier d32
   ExpressionList (children 1)
    OrderByElement (children 4)
     Identifier d32
     Function toDate (children 1)
      ExpressionList (children 1)
       Literal \'2020-01-01\'
     Function toDate (children 1)
      ExpressionList (children 1)
       Literal \'2021-01-01\'
     Function toIntervalMonth (children 1)
      ExpressionList (children 1)
       Literal UInt64_3