sql - Group by Multiple columns and case statement -


i have present orderdata group month , card type year this:

month   cardtype order_cnt 201201  amex    10,835 201201  disc    6,542 201201  mc  2,675 201202  amex    66,817 201202  disc    36,581 201202  mc  165,683

the table can data has orders each day of month. used following sql group order count each day of month card type:

(

select cardtype,orderdate,count (distinct(orderserialno)) tablename orderdate between '01-jan-2012' , '31-dec-2012' group cardtype,orderdate

)

now need present data in above form using case statement have group month, not able that. can please help.

thanks

to group month can use:

sqlserver:

group year(datefield)+month(datefield)

or oracle:

group to_char(datefield, 'year') + to_char(datefield, 'month')

so query:

select cardtype,count (distinct(orderserialno)),year(datefield)+month(datefield)  order_date  tablename orderdate between '01-jan-2012' , '31-dec-2012' group cardtype,year(datefield)+month(datefield)

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