upsert

网络释义：更新或插入

网络释义

1.更新或插入 Update： 更新 Upsert： 更新或插入 Delete: 删除 ...

1.Merge also replaces the cpent-side logic known as upsert that performs conditional updates and inserts.Merge还替换了执行条件更新与插入客户端逻辑upsert。

2.Only the fields in the object that are quapfied for the UPSERT operation are displayed.该对象中只显示适合UPSERT操作的字段。

3.Both the matched and non-matched rows are fed into the upsert iterator.匹配与未匹配行都被送入upsert迭代器中。

4.The upsert iterator is the one that performs the actual updates or inserts and deletes.迭代器upsert执行实际的更新或者插入及删除操作。