I am pretty new to the APEX/Triggers so any help is appreciated;

I have a custom field on the Contact object called 'Email Domain'. I am adding new Contacts that don't have Account Name.

What I would like to do is, when the Email Domain on one Contact matches another, the Account Name should match as well.

For Example I have:

Name:John Wayne
Account Name: Wayne Enterprise Email Domain: abcinc.com

IF Name: Peter Don Account Name: (blank) Email Domain: abcinc.com

Then for Contact Peter Don then Account Name = Wayne Enterprise.


This can get you started, then once you have a more specific question we can help you better


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This piece of code works fine for me. You can Use this code :

trigger populateAccountNameOnEmaildomain on Contact (after insert,after update) {
    map<string,Id> map1 = new map<string,Id>();
         List<Contact> contList3 = new List<Contact>();
         Set<String> emailList = new Set<String>();
         for(Contact con : trigger.new) {
             if(con.Emaildomain__c != null && con.AccountId == null) {
        List<Contact> contList = [SELECT Emaildomain__c,AccountId FROM Contact WHERE Emaildomain__c IN : emailList AND AccountId != NULL];
        for(Contact con:contList){
         List<Contact> newConList = new List<Contact>();
            for(Contact con:contList3){
                if(map1.get(con.Emaildomain__c) != NULL) {
                    Contact con1 = new Contact(Id = con.Id);
                    con1.AccountId= map1.get(con.Emaildomain__c);

            update newConList;



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  • This works well on the Sandbox, but in Production i am getting the following error when I do a Insert using Data Loader or Import Wizard populateAccountNameOnEmaildomain: execution of AfterInsert caused by: System.QueryException: Non-selective query against large object type (more than 100000 rows). Consider an indexed filter or contact salesforce.com about custom indexing. – B.Wayne Apr 13 '16 at 21:38
  • Hi Wayne, I think you are trying to update too much Accounts (more than 100000), so the error is coming. To avoid this error you have to use Batch Class. – Ajay Dubedi Apr 20 '16 at 11:24

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