Question

I am using SQL and I have a table with three colums: account, transaction_date, Points. Each account will have multiple transaction_dates and Points earned for each transaction.

How do I return the transaction_date when each account reached a certain threshold (i.e. accumulatee 100 Points). Say the first account has 2000 transactions and the first five have each 21 Points. I would like the query to return transaction # 5 because that is when the account reached 100.

Can anybody help? Thanks! Cat

Answer 1

select min(a.transaction_date), a.account from  (select sum(t1.points) as thesum, t2.transaction_date, t2.account  from table t1 inner join table t2 on t1.account = t2.account and t1.transaction_date <= t2.transaction_date group by t2.transaction_date, t2.account having thesum >= 100) a   group by a.account