我有一个在本地数据库中工作正常的查询。我刚刚进入远程数据库，错误发生如下：
DAO：
public String changeLecture(String CoursesID, String strDate, String strTime, String endTime, String venue, NewCourseInfoBean courseInfo) {
//preparing some objects for connection
Connection currentCon = null;
ResultSet rs = null;
PreparedStatement pstmt = null;
String result = "";
try
{
//connect to DB
currentCon = ConnectionManager.getConnection();
pstmt = currentCon.prepareStatement("select * from course_info where course_code=? and c_date=? and start_time=? and end_time=? and venue=?", ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
pstmt.setString(1, CoursesID);
pstmt.setString(2, strDate);
pstmt.setString(3, strTime);
pstmt.setString(4, endTime);
pstmt.setString(5, venue);
pstmt.executeQuery();
rs = pstmt.getResultSet();
//check whether the class is existed
if (rs.next())
{
rs.updateObject("c_date", courseInfo.getChangeC_date());
rs.updateObject("start_time", courseInfo.getChangeStart_time());
rs.updateObject("end_time", courseInfo.getChangeEnd_time());
rs.updateObject("venue", courseInfo.getChangeVenue());
rs.updateRow();
result = "Lecture slot updated successfully!";
}else{
result = "You do not have lecture with the details provided in 'current lecture slot' fields. Please check your schedule.";
}
}
//catch
//some exception handling
return result;
}
错误消息：
[MySQL][ODBC 5.3(a) Driver]
[mysqld-5.5.43-0ubuntu0.14.04.1]
Table 'sql679933.COURSE_INFO' doesn't exist
每当我提供正确的数据集时，表course_info中的数据都会更新。但是，如果提供了错误的数据集，程序将停在第pstmt.executeQuery();行。
EG。
正确的数据：select * from course_info where course_code='SSK3100'.....（工作正常）
数据不正确：select * from course_info where course_code='SSK333'......（无法执行查询）
此查询在本地数据库中工作正常，所以这里出了什么问题？ :(请帮忙。