UpdateQuery  t_lightweight (children 3)
 Identifier t_lightweight
 Function equals (children 1)
  ExpressionList (children 2)
   Identifier d
   Literal \'2018-01-02\'
 ExpressionList (children 1)
  Assignment e (children 1)
   Function CAST (children 1)
    ExpressionList (children 2)
     Literal \'foo\'
     Literal \'Enum8(\\\'foo\\\' = 1, \\\'bar\\\' = 2)\'
