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How to retrieve data from lookup? Example below shows that Case_Account__c contain lookup on Case and Account.   SELECT Case__r.caseNumber,Account__r.Name FROM Case_Account__c Put __r at the behind of lookup object.

I received this error : 03:10:47.139 (1139188000)|FATAL_ERROR|System.StringException: no protocol: mypersonaldomain.com I believed I already tested it before and it should work fine.But for sudden I got this error.The snippet of the code is like below : String str =String)this.controller.getRecord().get('User_Referrer__c'); if(str != null){ URL newURL= new URL(str); System.debug('newURL:::::: host '+newURL.getHost() ); } Actually the code break when it want to create new URL. URL newURL= new URL(str); The flow is start like this.User_Referrer__c is URL datatype that being inserted by the user.The code will capture the value , create new URL from it.Previously it work fine until one day, I got report that suddenly it break. So I try to investigate and found out that the value for User_Referrer__c should be http://mypersonaldomain.com instead of mypersonaldomain.com . See how simple http:// will cause the trouble.