内连接与等连接相同吗?
你能告诉我内连接和等连接是否相同吗?
Can you tell me if inner join and equi-join are the same or not ?
推荐答案
一般来说，内连接"与等连接"不同.
An 'inner join' is not the same as an 'equi-join' in general terms.
'equi-join' 表示使用等式连接表操作员或等效人员.如果外连接只使用相等(其他人可能不同意)，我仍然会称它为等连接".
'equi-join' means joining tables using the equality operator or equivalent. I would still call an outer join an 'equi-join' if it only uses equality (others may disagree).
'inner join' 反对 'outer join' 并确定在没有匹配值时如何连接两个集合.
'inner join' is opposed to 'outer join' and determines how to join two sets when there is no matching value.
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