sum subtract in sql server

Question

I have a  a select commamd 

 

 

select sd.section_id,Bm.Art,Color,sec.fld_barcode,sec.fld_sectionname,pro_barcode,sd.size,sum(sd.pro_Inqty)-Sum(sd.pro_outqty)as StockInhand from stock_trans_master sm

join stock_trans_details sd

on sm.st_id=sd.st_id

join BarcodeMaster Bm

on Bm.Barcode_m=sd.pro_barcode

join tbl_sectionmaster sec

on sd.section_id=sec.fld_id

where voucherdate <= '11-07-2018 00:00:00'

and (pro_barcode like ''+'%' )

AND (Color like 'S.GREEN' )

AND

(Bm.size like '4' )

AND

(Art like 'AUTUMN' )

and

group by sd.section_id,Bm.Art,sd.size,sec.fld_barcode,sec.fld_sectionname,pro_barcode,Color

 

 This statement return now  all data which stockinhand in equal to 0 value

 

now i want (sd.pro_Inqty)-Sum(sd.pro_outqty)as StockInhand is always return greater than 0 value.

 

 

Please suggest me.

 

 

thanx