As you probably know, the RS 2005 Report Builder lets business users create ad-hoc reports. Behind the scenes, the Query Translator converts the report metadata to the native queries supported by the relational data source (SQL Server and UDM with RS 2005 only). If you want to see the underlying queries, you have two choices:

1. You can use the SQL Server Profiler and examing its trace.

2. You can log the queries to the RS log files or watch them realtime by attaching a trace listener (e.g. the SysInternals DbgView). To enable this option, open the Report Server web.config file and change the Components element as follows:

<add name="Components" value="all,RunningJobs:3,SemanticQueryEngine:2,SemanticModelGenerator:2" />

<add name="Components" value="all,RunningJobs:3,SemanticQueryEngine:3,SemanticModelGenerator:2" />

Alternatively, you can omit the SemanticQueryEngine element whatsoever. The net effect of doing so will be escalating the trace switch to 4.

You may find this article useful in case you need to learn more about the Report Builder architecture.