Sum if/by

[Nihar Singh]

Hello Everyone,

I have the following dataset:
bse_mkt_cap date2 ind_num2
1325.5 02apr1996 10
185.8 02apr1996 10
725.57 02apr1996 10
1325 03apr1996 10
189 03apr1996 10
725.60 03apr1996 10
325.5 02apr1996 11
135.9 02apr1996 11
7025.7 02apr1996 11
325.3 03apr1996 11
135.9 03apr1996 11
7025.5 03apr1996 11

I want to sum the bse_mkt_cap by date and ind_num2 and get daily_mkt_cap.

For eg, I want the results as following (I manually added the bse_mkt_cap to show how I want the results):
bse_mkt_cap date2 ind_num2 daily_mkt_cap
1325.5 02apr1996 10 2236.87
185.8 02apr1996 10 2236.87
725.57 02apr1996 10 2236.87
1325 03apr1996 10 2239.6
189 03apr1996 10 2239.6
725.60 03apr1996 10 2239.6
325.5 02apr1996 11 7487.1
135.9 02apr1996 11 7487.1
7025.7 02apr1996 11 7487.1
325.3 03apr1996 11 7486.7
135.9 03apr1996 11 7486.7
7025.5 03apr1996 11 7486.7

Kindly help with the code.

[Øyvind Snilsberg]

egen daily_mkt_cap = total(bse_mkt_cap), by(date2 ind_num2)

[Nihar Singh]

Thankyou Øyvind!