UpdateQuery  mutation_table (children 3)
 Identifier mutation_table
 Function equals (children 1)
  ExpressionList (children 2)
   Identifier name
   Literal \'car\'
 ExpressionList (children 1)
  Assignment dt (children 1)
   Function toDateOrNull (children 1)
    ExpressionList (children 1)
     Literal \'2020-08-02\'
