与直接的提取和加载操作不同，转换是最复杂的部分。因为在此过程中需要对数据进行理解、转换、聚集和计算。

Unlike straightforward extract and load operations, transformation is the most complicated piece, as there is a need to understand, convert, aggregate, and calculate data.

youdao

在立即寻址模式中，要使用的数据是指令的一部分(例如li指令就表示“立即加载”，这是因为要加载的数字就是这条指令本身的一部分)。

In immediate mode, the data to be used is part of the instruction (for example, the li instruction stands for "load immediate," because the number to be loaded is part of the instruction itself).

youdao

这个例程用新的分区键创建了现有表的一个副本并用来自原始表的数据对它进行部分或全部加载。

This routine creates a copy of your existing table with the new partitioning key and loads it partially or fully with the data from the original table.

youdao