sql = "select * from TBM_STUDENT where STUDENT_NAME = ? ";
Connection con = ConnectionManage.getConnection();
PreparedStatement stmt = con.prepareStatement(sql); stmt.setString(1,"younger");
rs = stmt.getResultSet();
以上语句执行没有错误,但就是RS 返回的记录条数是0
sql = "select * from TBM_STUDENT where STUDENT_NAME = 'younger' ";
Connection con = ConnectionManage.getConnection();
PreparedStatement stmt = con.prepareStatement(sql); rs = stmt.getResultSet();
以上语句执行没有错误,但就是RS 返回的记录条数是1哪位知道有什么区别啊
Connection con = ConnectionManage.getConnection();
PreparedStatement stmt = con.prepareStatement(sql); stmt.setString(1,"younger");
rs = stmt.getResultSet();
以上语句执行没有错误,但就是RS 返回的记录条数是0
sql = "select * from TBM_STUDENT where STUDENT_NAME = 'younger' ";
Connection con = ConnectionManage.getConnection();
PreparedStatement stmt = con.prepareStatement(sql); rs = stmt.getResultSet();
以上语句执行没有错误,但就是RS 返回的记录条数是1哪位知道有什么区别啊
Connection con = ConnectionManage.getConnection();
PreparedStatement stmt = con.prepareStatement(sql); stmt.setString(1,"younger");
rs = stmt.stmt.executeQuery();
以上语句执行没有错误,但就是RS 返回的记录条数是0写错了,是这样的返回条数是0