code: public static int[] executeBatch(String sql, Object[][] params) throws YankSQLException {
  
      return executeBatch(YankPoolManager.DEFAULT_POOL_NAME, sql, params);
    }
docs: Batch executes the given INSERT, UPDATE, DELETE, REPLACE or UPSERT SQL statement using the
  default connection pool.
  
  @param sql The SQL statement
  @param params An array of query replacement parameters. Each row in this array is one set of
  batch replacement values
  @return The number of rows affected or each individual execution