mysql - 过滤 MySQL 时间戳

Question

我是新人，希望得到帮助!如果一个或多个“ID”缺少时间戳，则需要删除行。例如，在下表中，ID = 10 没有 IRIG_Time = 2014-05-15 09:05:00.000 的值，因此我需要删除该时间戳的所有 IRIG_Time 行。我正在使用以下查询来提取数据(感谢 Barmar 迄今为止的帮助!)。

CREATE TABLE Table1 
SELECT * 
FROM originaltable  Where IRIG_Time between  '2014/05/15 09:05' and '2014/05/15 09:35';
DELETE t.* FROM Table1 AS t
JOIN (
SELECT IRIG_Time
FROM Table1
GROUP BY IRIG_Time
HAVING COUNT(*) != 5
) AS t1 ON t.IRIG_TIME = t1.IRIG_TIME;
select * from Table1; 


IRIG_Time                   ID      MagnitudeA
2014-05-15 09:05:00.000     5       730406000
2014-05-15 09:05:00.000     15      742456000
2014-05-15 09:05:00.000     20      731190000
2014-05-15 09:05:00.000     25      748572000
2014-05-15 09:05:00.033     5       730343000
2014-05-15 09:05:00.033     10      755865000
2014-05-15 09:05:00.033     15      742347000
2014-05-15 09:05:00.033     20      731168000
2014-05-15 09:05:00.033     25      748574000
2014-05-15 09:05:00.067     5       730420000
2014-05-15 09:05:00.067     10      755767000
2014-05-15 09:05:00.067     15      742310000
2014-05-15 09:05:00.067     20      731176000
2014-05-15 09:05:00.067     25      748524000

使用上述代码时，我收到错误代码:1175 您正在使用安全更新模式，并且尝试更新没有使用 KEY 列的 WHERE 的表要禁用安全模式，请在“首选项”->“SQL 查询”中切换该选项，然后重新连接。

Answer 1

DELETE t.* FROM table AS t
JOIN (
    SELECT IRIG_Time
    FROM table
    GROUP BY IRIG_Time
    HAVING COUNT(*) != (SELECT COUNT(DISTINCT ID) FROM table)
    ) AS t1 ON t.IRIG_TIME = t1.IRIG_TIME

DEMO