MySQL INSERT ON DUPLICATE KEY UPDATE 原因 ID 不按顺序

Question

我使用此 SQL 创建了一个表:

CREATE TABLE import_xlsx (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
date DATETIME,
pair VARCHAR(10),
action VARCHAR(5),
volume DECIMAL(20,8),
order_price DECIMAL(20,8),
trading_price DECIMAL(20,8),
status VARCHAR(20),
CONSTRAINT table_unique UNIQUE (date, pair, action));

我有这个INSERT:

INSERT INTO binance_xlsx (date, pair, action, volume, order_price, trading_price, status)
VALUES('2018-05-14 13:58:54', 'ETHUSDT', 'SELL', '0.1', '725.0', '724.95', 'Filled') 
ON DUPLICATE KEY UPDATE 
status = VALUES(status);

我试图故意插入重复的行，数字 ID 是自动递增的。但行数仍然是 1。不应只在插入新行时自动递增？

结果如下:

+----+---------------------+---------+--------+------------+--------------+---------------+--------+
| id | date                | pair    | action | volume     | order_price  | trading_price | status |
+----+---------------------+---------+--------+------------+--------------+---------------+--------+
|  1 | 2018-05-14 13:58:53 | ETHUSDT | BUY    | 0.09889000 | 725.00000000 |  724.95000000 | Filled |
| 11 | 2018-05-14 13:58:53 | ETHUSDT | SELL   | 0.10000000 | 725.00000000 |  724.95000000 | Filled |
| 13 | 2018-05-14 13:58:54 | ETHUSDT | SELL   | 0.10000000 | 725.00000000 |  724.95000000 | Filled |
+----+---------------------+---------+--------+------------+--------------+---------------+--------+

如何保持id按顺序自动递增？

Answer 1

那只是因为您的主键是自动递增列，所以当您尝试插入时，您永远不会得到重复的键并插入新行。这是 id 列的创建语句:

id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY

您应该更改它并将主键设置为(日期、配对、操作)值，这样它才能正常工作