这段代码哪里错了，一直在报错

Question

Date t = new Date();
long l = t.getTime();
Timestamp time = new Timestamp(l);
Connection con = DBUtils.getConnetion();
String sql = "select * from book_pl group by bookname having pl_date = ? order by avg(book_score) desc";
PreparedStatement pstam = con.prepareStatement(sql);
pstam.setTimestamp(1,time);
ResultSet rs = pstam.executeQuery();

Answer 1

报的什么错？你都不说