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表扫描的英文

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"表扫描"怎么读用"表扫描"造句

英文翻译手机手机版

  • table scan

例句与用法

  • Table scans always read and lock all the rows in the table
    表扫描总是读取(并上锁)表中所有行。
  • Cumulative count of range and table scans started on the index or heap
    从索引或堆开始的范围和表扫描的累积计数。
  • It will choose indexed access if it has lower cost than table scan
    如果使用索引的开销比表扫描的开销低,优化器将选择索引访问。
  • Table scan behavior
    表扫描行为
  • Avoid indexing very small tables because it is typically more efficient to do a table scan
    因为进行表扫描通常效率更高,所以要避免对非常小的表创建索引。
  • The optimizer is more likely to choose a full table scan over an index if the value of this parameter is high
    为什么设置高了,优化器会选择全表扫描而不选择索引?
  • This prevents a large table scan from completely dominating the buffer pool and adversely impacting random operations
    这样可以防止大规模的表扫描完全支配缓冲池,并恶劣地影响随机操作。
  • To save on i o operations , the query processor may choose to scan another index instead of performing a table scan
    为了节省i / o操作,查询处理器可以选择扫描另一个索引,而不是执行表扫描
  • The optimizer , in the absence of current statistics , is choosing to do a table scan on both tables involved in the join
    在缺少当前统计的情况下,优化器选择对参与联接的两个表进行表扫描
  • With contiguous data pages , dms tablespaces allow for much more efficient operations such as sequential table scans than sms tablespaces do
    Dms表空间通过连续的数据页面支持比sms表空间要高效得多的操作,例如连续的表扫描
  • 更多例句:  1  2
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