mysql - interval statistic with month name column -


last time used interval, don't think work want to, want declare year , month. can guru can teach me here?

this sample data request:

food_type | sales | date_sales    pizza     buy     02-01-2015 12:00:00    pizza     buy     02-01-2015 03:00:00    pizza     sell     03-01-2015 01:00:00    pizza     sell     04-01-2015 05:00:00    pizza     buy     05-01-2015 02:00:00

this sample trying do

declare @startdate datetime = '02-01-2015',  @enddate datetime = '05-01-2015'   select type_food, count(case when status = 'buy' 1 end) [incoming], count(case when status= 'sell' 1 end) [outgoing] shop [something_date] between @startdate , @enddate

or

select type_food, count(case when status = 'buy' 1 end) [incoming], count(case when status= 'sell' 1 end) [outgoing],datediff(month, date_of_purchase, @year ) [year]   shop  group type_food, datediff(month,date_of_purchase, @year )

-- cant use datediff because want between date..

this closest query can if using datediff...not year anymore...

food type | month | buy | sell   pizza       12     10     5         pizza       13      3     1         ....        ...     ..     ..       pizza       32     5      2

how can make sql output this:

food type | month   |   buy | sell |   pizza       feb-15     10    5          pizza       mar-15     3     1         ....        ...       ..     ..       pizza       may-15     5     2

please me guru, still beginner in sql

i think need sum , group type_food 

 select type_food, date_format(date_sales, '%m -  %y'),  sum(case when sales = 'buy' 1 else 0 end) incoming,  sum(case when sales = 'sell' 1 else 0 end) outgoing  shop  group type_food

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