如何使用 MySQL NOT EXISTS 运算符

Question

在 table calendar_recovery_interval_hour_2020 上，我将日子划分为每个一小时的时间段，例如2020-04-14

+---------------------+---------------------+-----+
| start_date          | end_date            | sID |
+---------------------+---------------------+-----+
| 2020-04-14 00:00:00 | 2020-04-14 00:59:00 |   1 |
| 2020-04-14 01:00:00 | 2020-04-14 01:59:00 |   2 |
| 2020-04-14 02:00:00 | 2020-04-14 02:59:00 |   3 |
| 2020-04-14 03:00:00 | 2020-04-14 03:59:00 |   4 |
| 2020-04-14 04:00:00 | 2020-04-14 04:59:00 |   5 |
| 2020-04-14 05:00:00 | 2020-04-14 05:59:00 |   6 |
| 2020-04-14 06:00:00 | 2020-04-14 06:59:00 |   7 |
| 2020-04-14 07:00:00 | 2020-04-14 07:59:00 |   8 |
| 2020-04-14 08:00:00 | 2020-04-14 08:59:00 |   9 |
| 2020-04-14 09:00:00 | 2020-04-14 09:59:00 |  10 |
| 2020-04-14 10:00:00 | 2020-04-14 10:59:00 |  11 |
| 2020-04-14 11:00:00 | 2020-04-14 11:59:00 |  12 |
| 2020-04-14 12:00:00 | 2020-04-14 12:59:00 |  13 |
| 2020-04-14 13:00:00 | 2020-04-14 13:59:00 |  14 |
| 2020-04-14 14:00:00 | 2020-04-14 14:59:00 |  15 |
| 2020-04-14 15:00:00 | 2020-04-14 15:59:00 |  16 |
| 2020-04-14 16:00:00 | 2020-04-14 16:59:00 |  17 |
| 2020-04-14 17:00:00 | 2020-04-14 17:59:00 |  18 |
| 2020-04-14 18:00:00 | 2020-04-14 18:59:00 |  19 |
| 2020-04-14 19:00:00 | 2020-04-14 19:59:00 |  20 |
| 2020-04-14 20:00:00 | 2020-04-14 20:59:00 |  21 |
| 2020-04-14 21:00:00 | 2020-04-14 21:59:00 |  22 |
| 2020-04-14 22:00:00 | 2020-04-14 22:59:00 |  23 |
| 2020-04-14 23:00:00 | 2020-04-14 23:59:00 |  24 |
+---------------------+---------------------+-----+
24 rows in set

现在我需要在一秒钟内找到 table 相对于 table calendar_recovery_interval_hour_2020

丢失的时间段

这个tutorial

我在下面试过的代码没有成功

TRUNCATE TABLE `calendar_recovery_table_time_slot_2020`;

INSERT IGNORE INTO `calendar_recovery_table_time_slot_2020` SELECT
    start_date,
    end_date,
    NULL
FROM
    `calendar_recovery_interval_hour_2020` t
WHERE
    NOT EXISTS (
        SELECT
            1
        FROM
            `stable_2020` m
        WHERE
            m.`sdatetime` BETWEEN t.start_date
        AND t.end_date
        AND SUBSTRING_INDEX(m.`sdatetime`, ' ', 1) = '2020-04-14'
        ORDER BY
            m.`sdatetime` DESC
    )
AND SUBSTRING_INDEX(start_date, ' ', 1) = '2020-04-14';

我的 MySQL 版本是 5.5.62-log

列的名称是 sDatetime，类型是 Datetime。

有什么建议吗？

提前感谢您的帮助

更新

CREATE TABLE `calendar_recovery_table_time_slot_2020` (
  `start_date` datetime DEFAULT NULL,
  `end_date` datetime DEFAULT NULL,
  `sID` int(11) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`sID`),
  KEY `start_date` (`start_date`),
  KEY `end_date` (`end_date`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

CREATE TABLE `calendar_recovery_interval_hour_2020` (
  `start_date` datetime DEFAULT NULL,
  `end_date` datetime DEFAULT NULL,
  `sID` int(11) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`sID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=COMPACT;

CREATE TABLE `stable_2020` (
  `STUX` int(11) DEFAULT NULL,
  `sdatetime` datetime DEFAULT NULL,
  `sID` int(11) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (`sID`),
  UNIQUE KEY `ukey` (`STUX`,`sdatetime`) USING BTREE,
  KEY `sdatetime` (`sdatetime`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

更新 2

INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 00:00:00', '2020-4-14 00:59:00', 1);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 01:00:00', '2020-4-14 01:59:00', 2);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 02:00:00', '2020-4-14 02:59:00', 3);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 03:00:00', '2020-4-14 03:59:00', 4);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 04:00:00', '2020-4-14 04:59:00', 5);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 05:00:00', '2020-4-14 05:59:00', 6);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 06:00:00', '2020-4-14 06:59:00', 7);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 07:00:00', '2020-4-14 07:59:00', 8);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 08:00:00', '2020-4-14 08:59:00', 9);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 09:00:00', '2020-4-14 09:59:00', 10);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 10:00:00', '2020-4-14 10:59:00', 11);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 11:00:00', '2020-4-14 11:59:00', 12);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 12:00:00', '2020-4-14 12:59:00', 13);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 13:00:00', '2020-4-14 13:59:00', 14);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 14:00:00', '2020-4-14 14:59:00', 15);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 15:00:00', '2020-4-14 15:59:00', 16);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 16:00:00', '2020-4-14 16:59:00', 17);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 17:00:00', '2020-4-14 17:59:00', 18);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 18:00:00', '2020-4-14 18:59:00', 19);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 19:00:00', '2020-4-14 19:59:00', 20);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 20:00:00', '2020-4-14 20:59:00', 21);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 21:00:00', '2020-4-14 21:59:00', 22);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 22:00:00', '2020-4-14 22:59:00', 23);
INSERT INTO calendar_recovery_interval_hour_2020 (`start_date`, `end_date`, `sID`) VALUES ('2020-4-14 23:00:00', '2020-4-14 23:59:00', 24);

Answer 1

您可以像这样在 SQL 查询中添加 NOT BETWEEN 运算符：

SELECT
            1
        FROM
            `stable_2020` m
        WHERE
            m.`sdatetime` NOT BETWEEN t.start_date
        AND t.end_date
        AND SUBSTRING_INDEX(m.`sdatetime`, ' ', 1) = '2020-04-14'
        ORDER BY
            m.`sdatetime` DESC

Here 是另一种解决方案。

这样您就永远不需要在查询中使用 NOT EXISTS 运算符。试试这个，让我知道，谢谢。

如何使用 MySQL NOT EXISTS 运算符

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