(cross apply,outer apply 是SQL Server 2005 新增的) SQL Server 2000 中有个 cross join 是用于交叉连接。 增加cross apply 和 outer apply 是用于交叉连接表值函数。 APPLY 的两种形式:CROSS APPLY 和 OUTER APPLY。 CROSS APPLY 仅返回外部表中通过表值函数生成结果集的行。 OUTER APPLY 既返回生成结果集的...
(与INNER JOIN 类似) OUTER APPLY 的意思是“外部应用”,与 CROSS APPLY的原理一致,只是在匹配失败时,左表与右表也将合并为一条记录输出,不过右表的输出字段为 null。(与 LEFT OUTER JOIN 类似) CROSS APPLY 与 INNER JOIN 的区别 CROSS APPLY 可以根据当前左表的当前记录去查询右表,但是 INNER JOIN 不可以...
Left Join: i need to prepare the query as table (Temporary Table) and actual join will be provided after filtering of data using "ON" Cross Apply: i can prepare the Temporary Table in that i can make use of my parent table reference. Example: Left Join: Select r.Name, r.EmailID, ...
inner join sys.columns c on o.object_id = c.object_id -- noncorrelated subquery with inner join select o.name, c.name FROM sys.objects o inner join (select object_id, name from sys.columns) c on o.object_id = c.object_id -- noncorrelated subquery with cross apply select o.name,...
OUTER APPLY 的意思是“外部应用”,与 CROSS APPLY的原理一致,只是在匹配失败时,左表与右表也将合并为一条记录输出,不过右表的输出字段为 null。(与 LEFT OUTER JOIN 类似) CROSS APPLY 与 INNER JOIN 的区别 CROSS APPLY 可以根据当前左表的当前记录去查询右表,但是 INNER JOIN 不可以,INNER JOIN 是根据左...
My understanding of CROSS APPLY is that it should behave like an inner join. In the example I've created, I still get records with no match from my "function" table. This is the first time I've posted code here so please be patient if I screw it up a couple of times. ...
The apply-operator was introduced to "join" the result of a function to a resultset. That was not possible before the apply-operator. When using a table expression for joining there is no general answer whether you should use the one or the other. ...