Sentence examples for join orders from inspiring English sources

We use these predicates to determine if alternative join orders are possible for a query.

We use this capability to extract statistics for all join orders.

This information is used to collect statistics for query plan operators by interrogating the database for different join orders (Section 4.2).

When profiling the application, the profiler observes and collects execution statistics only for plans that get executed but not for alternative join orders.

We use a running example throughout this section of the query shown in Figure 9, with two different join orders, left and right.

The technical details of extending application-tier partitioning to integrate the data-tier are motivated by four requirements: (i) weighing the benefits of distributing queries, (ii) comparing the trade-offs between join orders, (iii) taking into account intra-request data-dependencies and (iv) providing a query execution model comparable to application-tier function execution.

Intuitively, it is the join order selection problem to generate a good query plan for DJ Q, G).

The query optimization phase deals with a known problem called query join ordering, which has a direct impact on the performance of such systems.

Finally, on line 7, we collect statistics for this join operator by forcing the database to explain a plan in which the join order is prefixed by the outer input set, followed by the inner input relation.

In order to make the BIP partitioner aware of alternative orders, we have extended our JDBC wrapper to consult the database engine and examine the alternatives by utilizing a combination of Explain Plan and join order hints.

The study also showed that whites account for 94percentt of current nuns and priests but only 58percentt of those in the process of joining orders.