5

SQL嵌套查询语句的报错问题

String sql = "select * from msgInfo where ID in(select top 15 ID from msgInfo where chatRoom=? Order by chatTime DESC) order by chatTime";
String userName=session.getAttribute("_USER").toString();
PreparedStatement ps = conn.preparedStatement(sql);
ps.setString(1,session.getAttribute("_CHAT_ROOM").toString());
ResultSet rs = conn.executeQuery();

这语句有问题吗,怎么老报错,没道理啊

ou have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '15 ID from msgInfo where chatRoom='dragon inn' Order by chatTime DESC) order by ' at line 1
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '15 ID from msgInfo where chatRoom='dragon inn' Order by chatTime DESC) order by ' at line 1

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qq_28247769
Zzz助
2016/05/10 05:52
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