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query optimizer中文是什么意思

  • 查询优化器

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  • 例句与用法
  • Advanced query optimizer
    高级查询优化器
  • Is updated when a query is optimized by the query optimizer , and is not persisted
    返回的信息将更新,因而不是持久化的。
  • The query optimizer may use indexed views to speed up the query execution
    查询优化器可使用索引视图加快执行查询的速度。
  • Therefore , the query optimizer might choose suboptimal plans for queries
    因此,查询优化器可能会选择不太理想的查询计划。
  • Use the query optimizer
    使用查询优化器
  • However , if no indexes are available , the query optimizer must use a table scan
    但如果没有索引,则查询优化器必须扫描表。
  • If the query optimizer prematurely terminates query optimization , the
    如果查询优化器过早终止了查询优化, xml显示计划输出中将返回
  • Forces the query optimizer to relax the estimated recompile threshold for a query
    强制查询优化器对查询放宽估计的重新编译阈值。
  • Forces the query optimizer not to recompile a query due to changes in statistics
    强制查询优化器不因统计信息的更改而重新编译查询。
  • However , the query optimizer always makes sure that a minimum number of rows are sampled
    但是,查询优化器始终确保采样的行数尽量少。
  • 更多例句:  1  2  3  4  5
  • 百科解释
The query optimizer is the component of a database management system that attempts to determine the most efficient way to execute a query. The optimizer considers the possible query plans for a given input query, and attempts to determine which of those plans will be the most efficient.
详细百科解释
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Last modified time:Wed, 13 Aug 2025 00:29:56 GMT

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