How to do this query in MySQL which one should I use using left join or right join or inner join?

如何查询在MySQL中应该使用哪一种使用LEFT JOIN或右连接或内加入吗？

If you have extracted advice behavior to another class, you can substitute a mock object for your helper object and verify that the advice triggers at the right join points.

如果将建议行为抽取到另一个类中，那么就可以用一个mock对象替代helper类对象，并验证建议是否在正确的联结点上触发。

Right now, the most important thing is to keep heated issues of war and peace entirely separate from the slow and tedious business of examining whether Turkey can one day join the EU.

现在，最重要的事情就是把关于战争与和平的激烈争论完全与审视土耳其是否能够加入欧盟这件冗长乏味的事情分开。

When new developers join a UCM project, for example, they are automatically given a workspace pre-configured with the right versions of the files and directories they need.

例如，当新的开发者加入到一个U CM项目时，他们自动地被给定一个预先配置好他们所需要的文件和目录的正确版本的工作空间。

The interview process is demanding, and probably somewhat daunting for participants, but it ensures that people who join their teams have the right fit and skills needed to contribute to success.

这种面试流程要求严格，可能会吓跑一些申请者，但它保证了加入团队的人适合团队并且拥有适当的技巧，这些对于团队的成功是非常必要的。

Any car wishing to join a platoon would specify its desired destination, making it possible to identify a nearby platoon heading the right way.

任何有意加入“智能车队”的车辆必须明确其目的地，从而辨识出附近某一合适的车队以加入并沿准确方向前行。

British Airways (BA), which already owns 10% of Iberia and has right of first refusal on another 30%, could stymie progress, join forces with TPG, or mount a bid of its own.

另一方面，英国航空公司（BA）拥有伊比利亚10%的股份和对另外30%股份的优先取舍权，凭借这些，英国航空公司可以阻碍得克萨斯太平洋集团的收购，或者与之合作，或者索性自己自行收购。

We'll fork left when the others fork right. We won't join the group tonight for the second five-course meal of the day.

晚上团体要吃今天第二顿的五道菜大餐，我们就不参加了。

You can tell the type of join (INNER, RIGHT, or LEFT) by the details of the join operator.

可以根据连接操作符的细节判断连接的类型(INNER、RIGHT或LEFT)。

To invite others to join, simply give them the short URL in the top right corner of the screen or invite participants directly from email, Twitter, or Facebook.

如果想邀请他人加入，你只需发给他们屏幕右上角的URL，或是直接通过电邮、Twitter或Facebook邀请即可。

When you find the right group to join, make eye contact and smile with someone in the group. Politely ask if you can join them.

如果你找到适合的谈话圈，先与其中一人眼神接触和点头微笑，礼貌询问是否可以加入他们。

You and your friend come right in and join me for lunch!

你和你朋友来得正巧，和我一起吃午饭吧！

The Join object has left-side attributes and right-side attributes, which are compared to each other to form join predicates.

联结对象具有左属性和右属性，对这两个属性进行比较，从而形成联结谓词。

Second, the bill expands the right of third parties to join the fray at the PTO by showing "prior art" -meaning the invention is already known about and so a patent should not be granted.

第二，法案体现“优先权之道”——即申请专利的发明之前已有人知道则不能通过。这样就扩大了在P TO参与纠纷的第三方权利。

The best way to increase your chances of reaching the top is to choose the right department to join.

要增加坐上最高位置的机会，最好的办法是选择加入合适的部门。

Hundreds of people offered to join a project that wasn't ready to incorporate all of them, not to mention that many were just not the right people: wrong area of expertise, wrong mindset.

数以百计的热心人主动提出加入该项目，而实际上项目此时并没做好准备接纳所有这些人，更不用提这些人中多数并不是合适人选：专业技能不对口，心态不端正。

Abroad, it led him to assert Brazil's right to join the best talking shops, such as the United Nations Security Council.

在国外，帮助他确定了巴西参与像联合国安理会这样的对话机构的权利。

Generate the expression for the join predicate by applying the join operator to the expressions for the left and right attributes.

将联结操作符应用于左右属性的表达式，从而产生联结谓词的表达式。

If the facts object contains any join references, then look at each of these join objects and keep track of all attributes from both the left and right sides of these joins.

如果事实对象包含任何联结引用，那么要查看每个联结对象，记录这些联结左右两边的所有属性。

It's a right-deep query plan such that for each hash join, the build table is a small dimension table.

每个散列连接都是右深查询，构建的表是一个小的维度表。