LEFT-JOIN

网络释义：左联接

网络释义

1.左联接

1.For more information about outer join syntax, see the topic LEFT JOIN, RIGHT JOIN Operations.有关外部联接语法的详细信息，请参阅主题LEFTJOIN和RIGHTJOIN操作。

2.From student left join scores on student.身份证号码，学生姓名，语文成绩。

3.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。

4.Exactly opposite to left join.与左连接正好相反。

5.left join or left outer join is a join that presents values for matched values and those that present only in the left table左连接或左外连接表示匹配值和只出现在左表中的的值。