Otherwise, if the full-text unique key size exceeds the maximum size allowed (900 bytes), full-text population will not be able to proceed.

否则，如果全文唯一键的大小超过所允许的最大值(900个字节)，全文填充将无法继续进行。

youdao

Although a 900-byte column is supported, we do not recommend building a full-text index that USES a key column of that size.

即使支持900字节的列，也不建议您使用这么大的键列来创建全文索引。

youdao

Ms. McAlister recommends that beginners opt for a full-size 88-key model that has a "weighted action, " which simulates the feel of actual piano hammers.

WSJ: Digital Pianos: Great Performers for Tight Spaces