如果列上有数据偏离，评估结果就可能不正确。

The estimate could be incorrect if there is data skew on the column.

youdao

换句话说，列上的数据有偏离。

In other word, there is data skew on the column.

youdao

换句话说，列上的数据有偏离。

In other word, there is data skew on the column.

youdao