Week6_Homework_SOQL_And_Loops

gistfile1.txt

public with sharing class WeekSixHomework {

    public static void soqlPractice() {

        //1. Below is a SOQL query that should be returning the top 5 Accounts in our org based on Annual Revenue.
        //Something's not quite right, can you fix the query?
        List<Account> topFiveAccounts = [SELECT Id, Name, AnnualRevenue FROM Account WHERE AnnualRevenue != 0 ORDER BY AnnualRevenue DESC LIMIT 5];

        System.debug('This should be 5: ' + topFiveAccounts.size());
     


        //2. Here is a query that is missing something.  It compiles, but if you try and run this method in Anonymous
        //you'll get an error when the method tries to use the query results.  Fix it! :)

        List<Contact> contacts = [SELECT FirstName, LastName, MailingState FROM Contact LIMIT 10];

        for (Contact c : contacts) {
            String name = c.FirstName + ' ' + c.LastName;
        }


        //3.  Can you write a SOQL query from scratch that will return the top 10 Accounts in the org, ordered by annual
        //revenue in decending order?  Print your results in the debug log.

		List<Account> topTenAccs = [SELECT Name, AnnualRevenue from Account WHERE AnnualRevenue !=Null ORDER BY AnnualRevenue LIMIT 10];
        For (Account acc : topTenAccs){
            System.debug('Account name: ' + acc.Name + '; annual revenue: ' + acc.AnnualRevenue);
        }
        //4.  Can you write a SOQL query that will return all opportunities for all accounts in the topFiveAccounts list that we used
        //in Number 1?  (topFiveAccounts) Hint:  If you're stuck, look back a the code in WeekSixClassExercises, getOpenOppsForHotAccounts method
        //  Print your results in the debug log.
		
        List<Opportunity> oppsFromTopFiveAccs = [Select Id, AccountId, Name FROM Opportunity WHERE AccountId in :topFiveAccounts];
                System.debug('These are opportunities from top 5 accounts: '+ oppsFromTopFiveAccs);
        
    }

    public static void forTheLoveOfForLoops() {

        //1. Take a look at the list and loop below.  It's commented out since it can't run as is.
        // Can you replace the ?? with the number that makes sense based on the comments?
        // Remove the slashes and compile.
        // Can you add an extra counter variable so that you can print out how many times the loop ran in total?


        //This loop should run 5 times
        
        Integer j = 0;
        for (Integer i=0; i<5; i++) {
        System.debug('i is now: '+i);
            j = j+1;
        }
	
        System.debug('This is how many times the loop ran: ' + j);

        //2.  Below is a loop that iterates through a list.  Can you change it to use the new For Loop syntax?  It should print out
        //each account name in the debug log when you're done.
        //Use the list size to tell you how many loops, and use indexing to fetch values.  If you need help, check the
        //loopingThroughLists method in WeekThree for hints

        List<Account> accountList = [SELECT Id, Name FROM Account LIMIT 5];

        for (Integer i=0; i<accountList.size(); i++) {
        System.debug('Account #' + i + ': ' + accountList[i].name);
         
        }

        

    }


}

Awesome work..good understanding of SOQL 👍