select help needed

[pelegk2]

i have 2 tables
the first 1 holds :
budget_id,once

the second table is an orders table :
order_id,budget_id,name

i want to make a select on the second table and sum all the rows that there budget_id=5 and i want it in the condition that all the budget id
i

[bubblenut]

What?
Do you mean sum or count? You don't appear to have a column for which it would make sense to sum in table two (or table one for that matter)