docs: public static int[] executeBatch(Connection conn, Iterable<String> sqls) throws SQLException {
  		Statement statement = null;
  		try {
  			statement = conn.createStatement();
  			for (String sql : sqls) {
  				statement.addBatch(sql);
  			}
  			return statement.executeBatch();
  		} finally {
  			DbUtil.close(statement);
  		}
  	}