Sql help - URGENT update info

Question

I ran a query to find 1)the current distribution group and corresponding account id number and 2) the historical distribution group and corresponding account id number from checks written in contract year 2008.
Here is the sql statement from my query:
SELECT EMPLOYEE_MASTER.EMPLOYEE_NO, EMPLOYEE_DISTRIBUTIONS.DISTRIBUTION_GROUP, EMPLOYEE_DISTRIBUTIONS.ACCOUNT_ID, PAYS_HISTORY.DISTRIBUTION_GROUP, ACCOUNT_HISTORY.ACCOUNT_ID, ACCOUNT_HISTORY.CHECK_KEY
FROM HRS.ACCOUNT_HISTORY ACCOUNT_HISTORY, HRS.EMPLOYEE_DISTRIBUTIONS EMPLOYEE_DISTRIBUTIONS, HRS.EMPLOYEE_MASTER EMPLOYEE_MASTER, HRS.PAYS_HISTORY PAYS_HISTORY
WHERE EMPLOYEE_DISTRIBUTIONS.EMPLOYEE_NO = EMPLOYEE_MASTER.EMPLOYEE_NO AND PAYS_HISTORY.EMPLOYEE_NO = EMPLOYEE_MASTER.EMPLOYEE_NO AND ACCOUNT_HISTORY.CHECK_KEY = PAYS_HISTORY.CHECK_KEY AND ((PAYS_HISTORY.CONTRACT_YEAR=2008) AND (ACCOUNT_HISTORY.TRANSACTION_TYPE='GRS'))
What I need to do now is update the distribution_group from the pays_history to match the distribution_group from the employee_distribution where the account_id is the same as the account_history.account_id.
Any ideas?
Thanks!

Answer 1

Are you asking me to create an update statement? Isn't it you want to achieve ?
If I could I wouldn't have posted here! (smiling)Yes, learning is made by tries and errors.
Your statement not so bad ;-)
So what about (with forum tags usage for post readability) :
[pre]Update hrs.pays_history ph
set    distribution_group = (select ed.distribution_group
                             from   hrs.employee_distributions ed
                             where  ph.employee_no   = ed.employee_no
                             and    ph.account_id    = ed.account_id
                             and    ph.contract_year = 2008)
where exists (select  null
               from   hrs.employee_distributions ed
               where  ph.employee_no   = ed.employee_no
               and    ph.account_id    = ed.account_id
               and    ph.contract_year = 2008)[/pre]
Not sure about the requirements, but at least that should run.
Nicolas.