It returns the most recently committed version of the rows, even if another concurrent session holds an exclusive row-level lock.
即使另一个并发会话持有一个独占式行级锁，它仍然返回最近提交的行。
During an export operation, row-level locking is applied to the exporting table, which means that only one lock is held at a time.
在导出操作期间，行级别锁定应用于导出表(exportingtable)，这意味着一次只持有一个锁。
Tables created by Informix default to page-level locking, so when two or more users attempt to update a row on the same page, at least one will get a lock error.
Informix创建的表默认执行了页面级锁定，所以当两个或更多用户尝试更新同一页面中的一行时，至少一个用户将获得锁定错误。
Some databases (such as SQL Server) allow you to disable the page-level locking in hopes that it won't escalate from a row-level lock to a table-level lock.
一些数据库(比如sqlServer)允许您禁用页面级锁，以期它不会从行级锁切换到表级锁。
So we can see 3 active locks: exclusive lock on key (row) level and 2 intent-exclusive locks on the page and table levels.
我们看到了3个锁信息，一个排它锁在行记录上，两个意向排它锁在页级以及数据表对象上。
So we can see 3 active locks: exclusive lock on key (row) level and 2 intent-exclusive locks on the page and table levels.
我们看到了3个锁信息，一个排它锁在行记录上，两个意向排它锁在页级以及数据表对象上。
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