SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function jsonMergePatch (children 1)
     ExpressionList (children 2)
      Literal \'{"a": {"b": 1, "c": 2}}\'
      Literal \'{"a": {"b": [3, 4]}}\'
