In fact, the only row-level locking that remains during INSERT is the next-key locks that are required to protect an INSERT from adding keys to repeatable read scanners.
实际上,在INSERT期间惟一保持的行级锁是next - key锁,这个锁用于使INSERT不会添加键到可重复的读扫描器。
However, that is not the same as dictating how a "repeatable process" (level 2) must be performed in terms of process, tools, and organizational roles.
然而,这并不是规定一个“可重复过程”(二级)必须利用过程、工具和组织角色来完成。
These next key locks are only obtained when the key INSERT finds that a scanner with a Repeatable Read (RR) isolation level has a row lock on the next-higher key in the index.
这些nextkey锁只有在keyINSERT发现带有RepeatableRead (RR)隔离级别的扫描器在索引中的next -higher键上有一个行锁时才能获得。
The heavy duty level regulator is a compact three-wire float switch for highly accurate and repeatable single point level sensing and control applications.
重型级稳压器是一个小巧的三线高度精确和可重复的单一浮动开关点水平传感和控制应用。
The heavy duty level regulator is a compact three-wire float switch for highly accurate and repeatable single point level sensing and control applications.
重型级稳压器是一个小巧的三线高度精确和可重复的单一浮动开关点水平传感和控制应用。
应用推荐