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- This can improve query performance in general. 这样通常可以提高查询的性能。
- Tunes databases for optimal query performance. 优化数据库以获得最佳查询性能。
- Query performance is widely variable. 查询性能差异很大。
- The SQL compiler uses informational constraints to improve query performance. SQL编译器使用信息约束来提高查询性能。
- Query performance may suffer with lots of tables referenced in a query. 如果查询中引用了许多表,查询性能会受到影响。
- You may want to index the XML data to speed up XML query performance. 您可能希望对XML数据创建索引以提高XML查询的性能。
- You ll find this a handy utility for debugging problems and improving query performance. 您将发现这个方便的实用程序可用于调试问题和提高查询性能。
- Command-line utility to analyze the effects this hypothetical configuration has on query performance for your database. 命令行实用工具来分析此假设配置对您的数据库查询性能的影响。
- Heavily fragmented indexes can degrade query performance and cause your application to respond slowly. 碎片非常多的索引可能会降低查询性能,导致应用程序响应缓慢。
- However, although indexing a column improves query performance, it also may negatively impact the performance of adding new records. 然而，尽管索引列提高查询性能，它同时也会在添加新记录时带来一些负面的性能影响。
- In general, execution of nodes on the thick lines and in subtrees with red boxes are most likely to determine query performance. 通常,执行粗线条上以及带红框的子树中的节点最有可能决定查询性能。
- Because both of these views are defined with a single SQL select statement on the underlying table, the query performance will not suffer. 因为这两个视图都是在下面的表格上使用单独的SQL选择语句进行定义,所以不会影响查询性能。
- Graphical query execution plans enable developers to easily see query execution plans and so better understand potential query performance issues. 使用图形查询执行计划,开发人员可以轻松地查看查询执行计划,因此,可以更好地了解潜在的查询性能问题。
- Clearing the plan cache causes a recompilation of all subsequent execution plans and can cause a sudden, temporary decrease in query performance. 清除计划缓存将导致对所有后续执行计划进行重新编译,并可能导致查询性能暂时性地突然降低。
- Covering indexes can improve query performance because all the data needed to meet the requirements of the query exists within the index itself. 涵盖索引可以提高查询性能,因为符合查询要求的全部数据都存在于索引本身中。
- Query performance evaluation and tuning is best approached as an ongoing process consisting of a series of successive refinements. 查询性能的评估和调优最接近于包含了一系列连续改进的进行过程。
- On the other hand, Database Engine Tuning Advisor recommendations include ordering of the key columns for indexes to optimize query performance. 另一方面,数据库引擎优化顾问建议包括对索引键列进行排序,以优化查询性能。
- Update statistics - To help optimize query performance, we recommend that you update statistics on all databases following upgrade. 更新统计信息-建议您在升级之后对所有数据库更新统计信息,以便优化查询性能。
- Analyze the effects of the proposed changes, including index usage, query distribution among tables, and query performance in the workload. 分析工作状态下,对某种变更的效果进行评估,包括索引用法,表间查询分布,查询效果
- And the result shows that this optimal strategy can improve query performance saliently if the query constraint expression is not a CNF. 结果表明，当查询条件不是合取范式时，该优化策略明显提高了查询性能。
