join on

基本解释

Each leg of the union does a two-table join on one of the sources.
union 的每個分支在某一個數據源上進行一個二表連接。
They're considerably slower than a join on a relational database, but, as a result, it is much harder to create a query that overwhelms the data store.
這要比關系數據庫上的連接慢得多，因此很難創建一個讓數據存儲超負荷的查詢。
Let me know if you decide to join in on this little project, “Save Timmy.” I’ll add your link to the bottom at the bottom of this article.
如果你已經決定加入這個竝不很起眼的活動，“拯救蒂米”，請讓我知道，我會把你的鏈接放在文章最後。

Im Faith Lapidus. Join us again next week for another People in America program on the Voice of America.
And you can join on to the Red Sox nation on top of that, and part of being a good Red Sox fan is knowing the statistics of your team.
除此之外你們可以,加入紅襪隊的國度，作爲一個好的紅襪隊球迷,也是了解你們支持球隊的,數據的一部分。
麻省理工公開課 - 化學原理課程節選
We are so glad that you're with us, so glad you can join us here today on the Inner Core.
真高興你今天能，做客我們人性節目。
普林斯頓公開課 - 人性課程節選

If all goes well, the new members will join on May 1st, 2004.
ECONOMIST: After the EU summit