SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier dt64
    Identifier dts64
    Identifier dtms64
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function generateRandom (children 1)
       ExpressionList (children 4)
        Literal \'dt64 DateTime64(3, \\\'UTC\\\'), dts64 DateTime64(6, \\\'UTC\\\'), dtms64 DateTime64(6 ,\\\'UTC\\\')\'
        Literal UInt64_1
        Literal UInt64_10
        Literal UInt64_10
   Literal UInt64_10