[fix] Better SQL SELECT instead of a timeout query

[bruntib]

This query runs when filtering by files or components with "anywhere on bugpath" option. In this case the following query was generated:

SELECT <columns> FROM reports WHERE reports.id IN (id1, id2, ...);

The ID list at "IN" block can be so huges that it eats up all the memory and times out the query. This ID list is now replaced with a nested select:

SELECT <columns> FROM reports WHERE reports.id IN (SELECT report_id FROM <some tables>);

[cservakt]

I am not sure using in operator is the best solution. What if we join all the tables to the reports like this:

SELECT <columns> FROM reports INNER JOIN files ON reports.file_id = files.id LEFT JOIN bug_path_events ON bug_path_events.file_id = files.id LEFT JOIN bug_report_point ON bug_report_point.file_id = files.id LEFT JOIN extended_report_data ON extended_report_data.file_id = files.id WHERE <file_filters> AND (bug_path_events.id IS NOT NULL OR bug_report_point.id IS NOT NULL OR extended_report_data.id IS NOT NULL);