SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toStartOfWeek (children 1)
     ExpressionList (children 3)
      Function toDateTime (children 1)
       ExpressionList (children 1)
        Literal UInt64_1419800400
      Literal UInt64_0
      Literal \'Europe/London\'