optimizer
英 [ˈɒptɪmaɪzə]
美 [ˈɑptəˌmaɪzər]
n. 优化程序（进行优化工作的程序）
复数：optimizers
双语例句
- Accurate index information and statistics are fundamental to cost-based decisions in the query optimizer.
准确的索引信息和统计信息是查询优化器中基于成本的决策的基础。 - The optimizer can decide to not use an index even if it could be used.
优化器可以决定不使用索引，即使该索引是可以使用的。 - Indicates that column statistics which would have been useful to the query optimizer are not present.
表明不存在可能对查询优化器有用的列统计。 - DB2's cost-based optimizer decides which table to scan and which table to access through the index.
DB2的基于成本的优化器决定了要扫描的表以及通过索引要访问的内容。 - The makers of Zend also have a commercial opcode cache that includes an optimizer to further increase efficiency.
Zend的厂商也提供了一种商业操作码缓存，包括一个进一步提高效率的优化器。 - This command updates the statistics in the system catalogs that the optimizer uses to determine the lowest-cost query plan.
此命令更新了系统目录中的统计数据，优化程序使用这些数据来确定成本最低的查询计划。 - These views include columns containing statistical information that is useful to the query optimizer.
这些视图包括一些包含对查询优化器有用的统计信息的列。 - Automatic Internet, PC and Registry Optimizer. It's safe. It's easy.
自动因特网，PC和注册表优化器。它是安全的。它是容易的。 - In this article, you have taken a look at the use of distribution statistics by the DB2 optimizer.
在本文中，您看到了DB2优化器对分布统计信息的使用。 - New optimizer directives and session environment controls are also introduced for influencing optimizer consideration of star join optimization.
新的优化器指令和会话环境控制因为影响优化器对星型连接优化的考虑，所以文中也包含了它们的介绍。