I'ved got a problem same as this but I am using Postgres.
Calculate balance with mysql
have a table which contains the following data:
ID In Out
1 100.00 0.00
2 10.00 0.00
3 0.00 70.00
4 5.00 0.00
5 0.00 60.00
6 20.00 0.00
Now I need a query which gives me the following result:
ID In Out Balance
1 100.00 0.00 100.00
2 10.00 0.00 110.00
3 0.00 70.00 40.00
4 5.00 0.00 45.00
5 0.00 60.00 -15.00
6 20.00 0.00 5.00
How best to handle "balance" calculation. I was told there is window function in postgres, how would this be done using postgres window functions ?
Thanks.