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我試圖運行此查詢重複鍵UPDATE:INSERT INTO ... ON工作不正常
protected function store_credentials($config_file_path = 'envato_credentials_config.json') {
$credentials_config = $this->get_envato_config($config_file_path);
$sql = "INSERT INTO credentials (api_key, username, last_update) VALUES (?, ?, NOW()) ON DUPLICATE KEY UPDATE api_key = values(api_key), username = values(username), last_update = values(last_update)";
if ($stmt = $this->connect->prepare($sql)) {
$stmt->bind_param('ss', $credentials_config['API'], $credentials_config['User']);
$stmt->execute();
$stmt->close();
} else {
return false;
}
}
但是,什麼情況是,我總是重複的條目時,它的執行,如果它再次執行,而不是更新它再次運行添加另外兩個條目。爲什麼會發生?
http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html – 2012-04-15 16:04:12
還有,id一定不能自動遞增主鍵;) – hjpotter92 2012-04-15 16:06:46
哦,因爲它是自動的增量,所以我應該將其設置爲PRIMARY KEY或UNIQUE,但不能自動增量? – Roland 2012-04-15 16:09:55