code: public static Long insert(String sql, Object[] params) throws YankSQLException {
  
      return insert(YankPoolManager.DEFAULT_POOL_NAME, sql, params);
    }
docs: Executes a given INSERT SQL prepared statement. Returns the auto-increment id of the inserted
  row using the default connection pool. Note: This only works when the auto-increment table
  column is in the first column in the table!
  
  @param sql The query to execute
  @param params The replacement parameters
  @return the auto-increment id of the inserted row, or null if no id is available