批量处理(BULK 批量处理(BULK OPERATIONS) JPQL 提供了一种替代方案,用一条语句更新或删除一个或多个实体.JPQL 中批 处理支持一次可以处理一个实体类型(和它的子类).
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These mechanisms are optimized for bulk operations and will usually offer significant speed advantages.
这些机制是为批量操作优化,通常会提供显著的速度优势。
When Filtering is suggested to be turned off only when performing bulk operations or when querying data over many atomic units.
只有在执行大块操作或是在多个原子单元间进行数据查询时才建议关闭过滤。
The transaction times for these operations made up the bulk of total transaction time during all our tests.
在所有测试中,这些操作占用的事务时间占据了总事务时间的大部分。
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