MariaDB中的索引键大小限制是多少？
在MySQL单列索引的索引键最多可达767个字节。相同的长度限制适用于任何索引键前缀。
查看和搜索MariaDB文档我找不到对此或类似限制的引用。
Reviewing and searching the MariaDB documentation I cannot find a reference to this, or a similar, limit.
这个限制是多少？
我找不到文档页面的链接是什么？
What is this limit?
What is the link to the documentation page I didn't find?
这是一个有点隐藏，但是例如
It is a bit hidden, but e.g.
说：
引擎之间INDEX的最大长度不同。
[...] MyISAM允许1000个字节; InnoDB允许767字节[...]
The maximum length of an INDEX is different between the Engines. [...] MyISAM allows 1000 bytes; InnoDB allows 767 bytes [...]
因此限制是特定于引擎的，但MySQL和MariaDB之间的限制没有区别。
So the limit is engine specific, but the limits are not different between MySQL and MariaDB.
PS：如果有疑问，MySQL和MariaDB仍然相似，任何未明确记录为不同的内容仍然是相同的
PS: if in doubt MySQL and MariaDB are still similar enough that anything that is not explicitly documented as being different is still the same