该查询计划显示了一个全表扫描。

This query plan shows a full table scan.

youdao

在这里，使用一个表扫描来访问行是更好的选择。

Accessing the rows using a table scan is a better choice in this case.

youdao

当必须要搜索整个表时，就称为表扫描。

When the entire table has to be searched, it's called a table scan.

youdao

执行代码后将进行表扫描。

A table scan will occur when the code is executed.

youdao

它们利用一个或多个XML索引完全避免表扫描。

They take advantage of one or multiple XML indexes to entirely avoid table scans.

youdao

这个报表查询需要该事实表的一个全表扫描。

This report query requires a full table scan of the fact table.

youdao

如果无法避免使用表扫描，则将其用在最小的表上。

If table scans cannot be avoided, try to have on the smaller table.

youdao

目前，要运行表上的RUNSTATS，就要执行全表扫描。

Currently, a full table scan is performed whenever RUNSTATS on table is run.

youdao

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。

It will choose indexed access if it has lower cost than table scan.

youdao

是否扫描了整个表或是否由索引访问？

Is the whole table scanned or is it accessed by an index?

youdao

扫描state表(0秒)。

Scan State table (0 seconds).

youdao

扫描customer表（6秒）

Scan customer table (6 seconds)

youdao

被扫描的表的算法(访问方法)。

The algorithm by which a table is scanned (access method).

youdao

但如果没有索引，则查询优化器必须扫描表。

However, if no indexes are available, the query optimizer must use a table scan.

youdao

我应该多久运行具有注册表优化扫描？

How often should I run a scan with Registry Optimizer?

youdao

我应该多久运行具有注册表优化扫描？

How often should I run a scan with Registry Optimizer?

youdao