SQL命令未正确结束

Question

尝试运行运行此Oracle SQL查询的java方法

String query =
            "SELECT count(*) " +
            "FROM TASK t " +
            "WHERE t.TASK_ID = ? ";

我一直得到SQL命令没有正确结束

打印字符串并获得此输出SELECT count(*)FROM TASK t WHERE t.TASK_ID =？

*编辑以反映新的更改,该方法基本上查找taskID,如果存在则返回true,否则为false.

public boolean loadTaskId(Integer taskId) throws SQLException{

    int count = 0;

    String query =
            "SELECT count(*) " +
            "FROM TASK t " +
            "WHERE t.TASK_ID = ?";

    OraclePreparedStatement stmt = prepareStatement(query);
    stmt.setInt(1, taskId);
    ResultSet rs = stmt.executeQuery();
    if (rs.next()) { // only load the first one
        count = rs.getInt(1);
    }
    stmt.close();
    if ( count == 0) {
        return false;
    } else {
        return true;
    }
}

Answer 1

您可能希望修改SQL语句以包含一些空格:

String query =
        "SELECT count(*) " +
        "FROM TASK t " +
        "WHERE t.TASK_ID = ?";

那可能就是问题所在.您可以将字符串打印到System.out进行确认.