id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
27936	"Add some clarifications to ""Spanning multi-valued relationships"""	Thomas Güttler	Jacob Walls	"First of all: Thank you for the great docs.
Since it took some time until we got the difference:

 {{{
filter(entry__headline__contains='Lennon').filter(entry__pub_date__year=2008)

 vs

filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)
}}}

The docs are great:

https://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships

But maybe the ascii art below helps to understand it better?

What do you think?

{{{
                      +--------------------+                                                                                      
                      |           Lennon   |                                                                                      
                    - |  Entry 1           |                                                                                      
+---------------+  /  |           2008     |                                                                                      
|               | /   +--------------------+                                                                                      
| Blog 1        |/                                 filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)         
|               |\                               -                                                                                
+---------------+ \ -                                                                                                             
                   \  +--------------------+                                                                                      
                    \ |                    |                                                                                      
                     -|  Entry 2           |                                                                                      
                      |                    |                                                                                      
                      +--------------------+                                                                                      
                                                                                                                                  
                                                                                                                                  
                      +--------------------+                                                                                      
                      |           Lennon   |                                                                                      
                    - |  Entry 3           |                                                                                      
+---------------+  /  |                    |                                                                                      
|               | /   +--------------------+                                                                                      
| Blog 2        |/                                   filter(entry__headline__contains='Lennon').filter(entry__pub_date__year=2008)
|               |\                                                                                                                
+---------------+ \ -                                                                                                             
                   \  +--------------------+                                                                                      
                    \ |           2008     |                                                                                      
                     -|  Entry 4           |                                                                                      
                      |                    |                                                                                      
                      +--------------------+                                                                                      
}}}

Ascii Art: https://textik.com/#100375b764993664

The ascii art could get improved, I wanted to ask you first before polishing it."	Cleanup/optimization	closed	Documentation	dev	Normal	fixed		tzanke@… Simon Charette Zach Borboa	Ready for checkin	1	0	0	0	0	0