For the deptno column, num_freqvalues is 0, and num_quantiles is 0.

对于deptno列，num _ freqvalues是0,num _ quantiles是0。

youdao

For the deptno column, num_freqvalues is 5 and num_quantiles is 10.

对于deptno列，num _ freqvalues5, num _ quantiles是10。

youdao

Since both LASTNAME and DEPTNO are part of the index, we will get index-only access.

因为LASTNAME和DEPTNO都是索引的一部分，我们将获得仅限索引的访问。

youdao

Since both LASTNAME and DEPTNO are part of the index, we will get index-only access.

因为LASTNAME和DEPTNO都是索引的一部分，我们将获得仅限索引的访问。

youdao