The nested loop join method is used to join the remote query result from each warehouse and the XML composite view result.
这里使用了嵌套的循环连接方法来连接来自每个仓库的远程查询结果和xml合成视图结果。
Join plan directives that force optimizer to use the designated join method to join tables in the query, either nested loop join, sort merge join, or dynamic hash join.
连接计划指示，强制优化器使用指定的连接方法来连接查询中的表，要么是嵌套循环连接、分类合并连接，要么是动态哈希连接。
However, if 0 is used in the predicate, a nested-loop join would be the optimal choice instead of merge join.
然而，如果断言中使用的值为0，那么内嵌循环联接可能是最优选择，而不是合并联接。
In the previous section you learned about one type of access method, index scan (IXSCAN), and one type of join method, nested loop join (NLJOIN).
在之前的部分您已经了解了一种类型的访问方法，即索引扫描(IXSCAN)，和一种类型的联接方法，即嵌套循环联接(NLJOIN)。
As previously stated, ordered input is essential to a merge scan join, but it is not required for nested loop joins.
如前所述，按顺序的输入对于合并扫描联接是必不可少的，但其无需嵌套循环联接。
Figure 4 shows a plan using the nested loop join operations at the federated server to evaluate this query.
图4展示了一个在联邦服务器使用嵌套循环连接操作符来计算这个查询的计划。
This is a lot faster than a nested loop join of two table scans without any index usage.
这比不使用任何索引的两个表扫描的嵌套循环连接要快得多。
The most commonly used join methods are nested-loop join, sort merge join and dynamic hash join.
最常用的连接方法就是嵌套循环连接、分类合并连接和动态哈希连接。
The above example shows that sequential scan and indexes are used to do the data retrieval, and the nested-loop join method is used to join all tables.
以上示例展示了如何使用连续扫描和索引来进行数据检索，以及如何使用嵌套循环连接方法来连接所有表。
So when compared to a nested loop join, the merge scan join may incur the cost for sorting the inputs.
因此，当与嵌套循环联接比较时，合并扫描联接可能对于排序输入产生成本。
Join operators such as HASH, MERGE SCAN and (in some situations) NESTED LOOP can also benefit from asynchrony by simultaneously executing the inner and outer legs of the join operator.
MERGESCAN等连接操作符和(在某些情况下)NESTED LOOP也可以通过同时执行连接操作符的内分支和外分支而从异步中获益。
This type of access path is referred to as a nested loop join (NLJOIN) with sort composite.
这种类型的访问路径被称为使用复合排序的嵌套循环联接(NLJOIN)。
In general, a nested loop join with sort composite is favored by the optimizer if the inner index is well-clustered and the inner table is expected to be probed many times.
一般来说，如果内部索引是良好的集群且预测内部表被多次探测，则使用复合排序的嵌套循环联将受到优化器的青睐。
Therefore, in Figure 7 the optimizer chooses to sort the composite for the nested loop join.
因此，在图7中优化器选择排序嵌套循环联接的复合物。
Also, the nested loop join method is used to join the source and target tables.
而且，嵌套循环联接方法用于联接源表与目标表。
However, the benefit of the merge scan join is that the inner table does not have to be scanned repeatedly as it does for nested loop joins.
然而，合并扫描联接的好处是不必反复地扫描内部表因为其为嵌套循环联接工作。
The result of that join operation then becomes the first input to the second join operation (also a nested loop join).
该联接操作的结果就成为第一个联接操作输入到第二个联接操作（也是一个嵌套循环联接）。
If the query includes a join, the optimizer must determine the join plan (hash, sort merge, or nested loop), and the order in which tables are evaluated or joined.
如果该查询包含了连接，那么优化器就必须确定连接计划(hash、sortmerge或nested loop)，以及评估或连接表的次序。
Here's what happens at execution time for the first leg of the nested loop join.
以下是在执行嵌套循环联接的第一步时将发生的操作。
Nested loop join (NLJOIN) with sort composite.
使用复合排序的嵌套循环联接(NLJOIN)。
Example 5: INLIST to Nested Loop Join (query rewrite).
例子5：INLIST改为嵌套循环连接(查询重写)。
The 3 tables in QB1 are joined with nested loop join (NLJ).
QB 1中三个表用嵌套循环(NLJ)连接。
There is a nested loop join (NLJOIN, step 4) of the insert (step 5) to an index scan (IXSCAN, step 7).
其中有一个insert（步骤5）与索引扫描（步骤7）之间的嵌套循环连接（NLJOIN，步骤4 ）。
Contrarily to the nested loop join, indexes are no longer so important.
与嵌套循环联接相反，索引不再是非常重要的了。
Contrarily to the nested loop join, indexes are no longer so important.
与嵌套循环联接相反，索引不再是非常重要的了。
应用推荐