SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Literal \'dt64 < dt\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier dt64test
   Function less (children 1)
    ExpressionList (children 2)
     Identifier dt64_column
     Function materialize (children 1)
      ExpressionList (children 1)
       Function toDateTime (children 1)
        ExpressionList (children 1)
         Literal \'2020-01-13 13:37:00\'
