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。
3
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.