连接可以对同一个表操作,也可以对多个表操作,对同一个表操作的连接称为自连接(self join)。 连接类型(join type)分为三种:内连接、外连接和交叉连接。
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high-strength bolted bearing type join 承压型高强度螺栓连接
strength bolted bearing type join 承压型高强度螺栓连接
Join the type 加盟类型
join-turning type 转接形式
Relational guidelines such as join, MSJOIN, NLJOIN, and HSJOIN can be used to specify the join order and the join type.
关系准则,比如join、MSJOIN、NLJOIN和HSJOIN都可以用来指定连接顺序和连接类型。
For example, the join class contains a left-join expression, a right-join expression, a join type, and a join criteria.
举例来说,join类包含一个左连接表达式、一个右连接表达式、一个连接类型和一个连接标准。
In these examples I'll focus on selecting join points by annotation type; further down I'll explain some of the other factors that can weigh in on join point selection.
在这些例子中,我将重点放在通过注释类型选择连接点上,然后我将进一步解释在选择连接点时,其他会起作用的因素。
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