The code in Listing 2 is intended to pull from the list either all transactions if no filter is specified or a single transaction together with the related project information.

清单2中的代码旨在查询到列表中的所有交易(若没有指定过滤条件的话)或者单个交易以及相关的项目信息。

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This includes information such as response time, an SQL statement's count of that transaction, cost estimation, sorting statistics, locking related details, and so on.

这些信息包括响应时间、此事务的sql语句计数、估计的成本、排序统计数据、与锁相关的详细信息等等。

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