This can be done by using a timestamp or sequence number contained in the row, or by adding every column in the row to the WHERE clause of the UPDATE.

这可以通过使用数据行中包含的时间戳或序列号来进行，也可将数据行的每个列字段添加到UPDATE的where子句中。

youdao

You can use this update functionality to change documents in an XML column without XML parsing or reading the document into your application.

可以使用这种更新功能修改xml列中的文档，而不需要解析xml文档或把文档读取到应用程序中。

youdao

For example, an update to a column will always result in updating a flag (another column) in the same table or some other table.

例如，对一列的更新总是会导致更新同一张表或者其它一些表中的标志(另一列)。

youdao

Update: This column has been edited to reflect reader criticism in comments.

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