1071 - Specified key was too long; max key length is 767 bytes

1071 - Specified key was too long; max key length is 767 bytes错误是指在创建索引时，索引字段的长度超过了数据库限制的最大长度767字节。这个错误可能会出现在不同的数据库系统中，比如MySQL。这个错误通常出现在创建唯一索引时，因为唯一索引需要保证索引字段的唯一性。如果你的索引字段过长，超过了数据库限制的最大长度，就会出现这个错误。解决这个问题的方法有几种。一种是缩短索引字段的长度，使其不超过最大长度限制。另一种是修改数据库的配置，增加最大索引长度的限制。还有一种是考虑使用前缀索引，将索引字段的前几个字符作为索引，以减少索引字段的长度。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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