How to use one SOQL query for both before and after trigger on the same object in Salesforce?

Hi Ajay,

Yes you can use static variables for this as they are meant for same purpose .

Create a static list in your helper class and use same in your before trigger and after trigger

public class cachequery {
    public static List<Account> lstaccount= [Select Id,Name from Account LIMIT 10];
}

The sample trigger to provide an idea

trigger T1 on Account (before insert, after insert) {
    list<Account> lstcached = cachequery.lstaccount;
    if(Trigger.isBefore && Trigger.isInsert){
        system.debug(lstcached );
    }
    if(Trigger.isAfter && Trigger.isInsert){
        system.debug(lstcached );
    }
}

Hope this helps you.