In fact, when this feature is enabled, and the INSERT operation requires a new or reused block, DB2 will take an exclusive (x) lock on the block in order to add it to the target cell.
实际上,当该特性被启用,并且INSERT操作要求一个新的或重用的块时,DB 2将在块上采用一个独占的(X)锁,以便将它添加到目标单元。
This is an infrequently used operation within a short-lived transaction, and there is no reason to take the risk of the update failing.
在短时间的事务中很少使用该操作,因为此操作会导致更新失败的风险。
Take an initial value and combine it via an operation on the first element of the list.
获取初始化值,并通过在列的首个元素上的操作来与其结合。
应用推荐