return mysql_query(env, "DROP DATABASE " + databaseName, conn) != null;
Value value = mysql_query(env, "DROP DATABASE " + databaseName, conn);  return (value != null && value.toBoolean());
  public boolean mysql_drop_db(Env env,                               @NotNull String databaseName,                               @Optional Mysqli conn)  {    if (databaseName == null)      return false;    return mysql_query(env, "DROP DATABASE " + databaseName, conn) != null;  }