- views_plugin_display_extender::query in modules/views/ plugins/ views_plugin_display_extender.inc 
- Inject anything into the query that the display_extender handler needs.
- views_plugin_display::query in modules/views/ plugins/ views_plugin_display.inc 
- Inject anything into the query that the display handler needs.
- views_plugin_exposed_form::query in modules/views/ plugins/ views_plugin_exposed_form.inc 
- Add anything to the query that we might need to.
- views_plugin_pager::query in modules/views/ plugins/ views_plugin_pager.inc 
- Modify the query for paging
- views_plugin_query::query in modules/views/ plugins/ views_plugin_query.inc 
- Generate a query and a countquery from all of the information supplied to the object.
- views_plugin_row::query in modules/views/ plugins/ views_plugin_row.inc 
- Add anything to the query that we might need to.
- views_plugin_style::query in modules/views/ plugins/ views_plugin_style.inc 
- Add anything to the query that we might need to.