Dear Experts

I have these codes

SELECT acc_code,sum(open_dr) as dr_amount,sum(open_cr) as cr_amount
 from master where LEN(acc_code)>4 and left(acc_code,4)='2305'
 group by acc_code

the codes generates results group by acc_code like shown in attachment.

But I need sum of all codes in single row like this

2305-245585-356588

I used this query but it does not work

SELECT acc_code,sum(open_dr) as dr_amount,sum(open_cr) as cr_amount
 from master where LEN(acc_code)>4 and left(acc_code,4)='2305'
 group by LEFT(acc_code,2)='23'

Please help