join on

基本解釋

Each leg of the union does a two-table join on one of the sources.
union 的每個(gè)分支在某一個(gè)數(shù)據(jù)源上進(jìn)行一個(gè)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(guān)系數(shù)據(jù)庫上的連接慢得多，因此很難創(chuàng)建一個(gè)讓數(shù)據(jù)存儲(chǔ)超負(fù)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(jīng)決定加入這個(gè)竝不很起眼的活動(dòng)，“拯救蒂米”，請(qǐng)讓我知道，我會(huì)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(duì)的國度，作爲(wèi)一個(gè)好的紅襪隊(duì)球迷,也是了解你們支持球隊(duì)的,數(shù)據(jù)的一部分。
麻省理工公開課 - 化學(xué)原理課程節(jié)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?nèi)诵怨?jié)目。
普林斯頓公開課 - 人性課程節(jié)選

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