Hi,
i am trying to obtain from the database what we have been doing in a excel
sheet from some time.
I have some tables where i store the documents associated with our customers,
invoices, payments and others, what i need to get from this tables it is a
movement log where i can get what payment it is pending from this customer after
the change in this row, for example:
movement | qty | pending
invoice N-111 | 1000.0 | 1000.0
payment 1 N-111 | 200.0 | 800.0
payment 1 N-111 | 150.0 | 550.0
invoice N-112 | 350.0 | 900.0
how could i calculate this pending column that does not exists in the database
and i need to be based on last result row? I would like to get with raw SQL but
the need to use any procedural language would not be a problem.
Thanks!
Regards,
Miguel Angel.