Group repeated SQL queries

[mgood]

When the same SQL query is repeated multiple times within the same request, it would be useful to group the results.

For example, querying multiple records of the same type might be executed as the same SELECT statement repeated with different id parameters.

These could be grouped to show the total number of executions and aggregate times in order to make it easier to compare the distinct queries against each other. The groups could be expanded to show details for each occurrence.