One thing that can be confusing about R's "everything is a vector" approach is that row-wise and column-wise operations may not adhere to your intuition.

关于 R 的 “所有东西都是向量” 方式，容易引起混乱的一点是行操作和列操作可能不符合直觉。

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We use the DB2 OLAP function row_number to assign a unique number to each affected row and then run a block-wise searched update, followed by a COMMIT.

我们使用DB 2 olap函数row _ number将一个惟一的数值赋给每个受影响的列，然后运行一个block - wise搜索更新，之后执行一次COMMIT。

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