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Update mysql-questions-01.md #2493

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2 changes: 1 addition & 1 deletion docs/database/mysql/mysql-questions-01.md
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Expand Up @@ -606,7 +606,7 @@ InnoDB 的行锁是针对索引字段加的锁，表级锁是针对非索引字

InnoDB 行锁是通过对索引数据页上的记录加锁实现的，MySQL InnoDB 支持三种行锁定方式：

- **记录锁（Record Lock）**：也被称为记录锁，属于单个行记录上的锁。
- **记录锁（Record Lock）**：属于单个行记录上的锁。
- **间隙锁（Gap Lock）**：锁定一个范围，不包括记录本身。
- **临键锁（Next-Key Lock）**：Record Lock+Gap Lock，锁定一个范围，包含记录本身，主要目的是为了解决幻读问题（MySQL 事务部分提到过）。记录锁只能锁住已经存在的记录，为了避免插入新记录，需要依赖间隙锁。

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