mysql - Sort all query results in 2 categories -

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i have transaction data in mysql table. 1 of fields name of supplier. in number of records supplier not specified (literally 'unspecified').

so data looks :

id     date          supplier            --- 1       1 nov 2013    green supplier 2       3 nov 2013    red supplier 3      15 nov 2013    unspecified 4       2 dec 2013    unspecified 5       6 nov 2013    blue supplier 6      20 nov 2013    unspecified

x 100,000 etc

i can sum , group each month using sum(if(date_format (date, '%b, %y')= 'nov, 2013', 1,0) etc -

                nov 2013   dec 2013   unspecified        1        2 green supplier     1        0 red supplier       1        0 blue supplier      0        1     etc

however want simplified version breaks results down (1) unspecified , (2) else totalled. results -

                nov 2013   dec 2013    unspecified        1        2 'not unspecified'   2        1     etc

while still retaining sum per month format. sure should simple, can't think of how. can advise?

you add conditional logic group by in query:

select (case when supplier = 'unspecified' 'unspecified' else 'specified' end),        . . .  . . . group (case when supplier = 'unspecified' 'unspecified' else 'specified' end);

in mysql, don't have repeat logic in group by:

group 1

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