为什么While（rs.next（））语句在第一次迭代后结束？

Z时代
2024-01-10
分类：问答

我正在使用SELECT语句从表中获取数据，然后将其插入到另一个表中。但是，行“ stmt.executeQuery（query）;”

从表中插入第一行然后退出。当我注释掉这一行时，while循环遍历所有行，将它们打印出来。stacktrace没有显示任何错误。为什么会这样呢？

try{                
    String query = "SELECT * FROM "+schema_name+"."+table;
    rs = stmt.executeQuery(query);
    while (rs.next()) {
        String bundle = rs.getString("BUNDLE");
        String project_cd = rs.getString("PROJECT_CD");
        String dropper = rs.getString("DROPPER");
        String week = rs.getString("WEEK");
        String drop_dt = rs.getString("DROP_DT").replace(" 00:00:00.0","");
        query = "INSERT INTO INDUCTION_INFO (BUNDLE, PROJECT_CD, DROPPER, WEEK, DROP_DT) "
              + "VALUES ("
              + bundle+","
              + "'"+project_cd+"',"
              + dropper+","
              + week+","
              + "to_date('"+drop_dt+"','YYYY-MM-DD'))";
        System.out.println(query);
        stmt.executeQuery(query);
    }
}catch(Exception e){
    e.printStackTrace();
}