Altering a column must not make the total byte count of all columns exceed the maximum record size (SQLSTATE 54010).
对列的修改不能导致所有列的总字节数超过记录的最大大小(SQLSTATE 54010)。
The lower the byte count downloaded to the browser or loaded from the browser's cache, the better the application's performance, and the less bandwidth the application will consume.
下载到浏览器的字节数越少或从浏览器缓存加载的字节数越少，应用程序的性能就越高，应用程序消耗的带宽越少。
The lower the byte count downloaded to the browser or loaded from the browser's cache, the better the application's performance, and the less bandwidth the application will consume.
下载到浏览器的字节数越少或从浏览器缓存加载的字节数越少，应用程序的性能就越高，应用程序消耗的带宽越少。
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