SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList (children 1)
      Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier source
   Function less (children 1)
    ExpressionList (children 2)
     Function toYear (children 1)
      ExpressionList (children 1)
       Identifier dt
     Literal UInt64_2023
   Set
