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abdul_rouf26 0 Unverified User

I am new in apex. I want to write a trigger in apex for before insert. I have to standard object (Contact, Opportunity).

SELECT sum(amount), Bussiness__c from opportunity where stagename='Closed Won' and id='006i000000Kt683AAB' group by Bussiness__c

I want when trigger runs this get sum(Amount) field and Bussiness__c value and then update Contact Total_Business__c with Sum(Amount) Value. Here Bussiness__C is contact id at opportunity object.

Thanks in advance and Waiting for your positive Response.

Edited by happygeek because: moved
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