Almost all ORMs boil down their queries down to a single query handler so it's actually super easy to find the query.
My ORM for example:
*Read paths*
- Models/Factory/Getters/GetAllRecords.php:28 - table(...) when indexField is set.
- Models/Factory/Getters/GetAllRecords.php:31 - allRecords(...).
- Models/Factory/Getters/GetAllRecordsByWhere.php:95 - table(...) when indexField is set.
- Models/Factory/Getters/GetAllRecordsByWhere.php:98 - allRecords(...).
- Models/Factory/Getters/GetRecordByWhere.php:20 - oneRecord(...).
- Models/Factory/Getters/GetByQuery.php:9 - oneRecord(...).
- Models/Factory/Getters/GetAllByQuery.php:9 - allRecords(...).
- Models/Factory/Getters/GetTableByQuery.php:9 - table(...).
- Models/Versioning.php:122 - revision table(...).
- Models/Versioning.php:124 - revision allRecords(...).
*Write paths*
- Models/Events/Save.php:41 - insert on save() for phantom records.
- Models/Events/Save.php:53 - update on save() for existing dirty records.
- Models/Events/Delete.php:18 - delete by primary key.
- Models/Events/Destroy.php:24 - insert history row before destroy for versioned models.
- Models/Versioning.php:180 - insert history row after versioned save.
Error/retry path
- Models/Events/HandleException.php:35 - direct $connection->exec(...) for auto-creating missing tables.
- Models/Events/HandleException.php:43 - direct $connection->query(...) to rerun the failed query after table creation.
All of those eventually bottom out in IO/Database/StorageType.php:119 for non-result queries via PDO exec, or IO/Database/StorageType.php:149 for result queries via PDO query.
I used to profile all my queries in those two methods but with tools like NewRelic there's no need to slow the code down with profiling cruft.