However, if there are many duplicate rows per distinct index value, and the associated table is highly clustered, the added costs of joining through the index can be slight.

然而，如果每个不同的索引值都有许多重复的行，而所关联的表是高度群集的，那么通过索引添加的连接成本可能很低。

youdao

The value should be a string that you want to be added to the end of the where-clause when querying the table.

该值应该是一个字符串，在查询表时，希望将该字符串添加到where子句的后面。

youdao

The data in this table are calculated at current prices. Per Capita Civilian Value Added are calculated on the permanent residents.

本表按当年价格计算，人均民营经济增加值年平均人口数按常住人口计算。

youdao