mysql - SQL group by months, display empty months -


i got sql fiddle minimal data. database contains on 1000 output columns query couldnt load sqlfiddle.

i display months years found. in example car 1 sold in 2003 , display empty months 2003.

for car 2 sold in 2003 , 2004. display empty months 03 , 04.

i have read lot of similar questions , think simple join month table should trick. dont know how joins properly. me out on one?

sql fiddle here: http://sqlfiddle.com/#!9/14b2f5/3

also real query in mysql workbench , output this. can see feb. 2003 missing there. display "1952 alpine renault 1300" - "0" - "february 2003" instead of nothing now.


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