Method add

sql/item_jsonfunc.cc:4865–4886

bool Item_func_json_objectagg::add()
{
  StringBuffer<MAX_FIELD_WIDTH> buf;
  String *key;

  key= args[0]->val_str(&buf);
  if (args[0]->is_null())
    return 0;

  null_value= 0;
  if (result.length() > 1)
    result.append(STRING_WITH_LEN(", "));

  result.append('"');
  st_append_escaped(&result,key);
  result.append(STRING_WITH_LEN("\":"));

  buf.length(0);
  append_json_value(&result, args[1], &buf);

  return 0;
}


String* Item_func_json_objectagg::val_str(String* str)