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 equals (children 1)
    ExpressionList (children 2)
     Function toYear (children 1)
      ExpressionList (children 1)
       Identifier ts
     Literal UInt64_2023
   Set
