SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList (children 1)
      Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier source
   Function greater (children 1)
    ExpressionList (children 2)
     Function toYear (children 1)
      ExpressionList (children 1)
       Identifier dt
     Literal UInt64_2023
