This question runs in a pre-configured Salesforce environment - no personal connection required.

Query all Account records and return a Map where the key is the BillingCountry and the value is the Name of the Account with the highest AnnualRevenue in that country. Only include countries that have at least one Account with a non-null AnnualRevenue.

Examples:

Input: No parameters Output: {'USA' => 'TechFlow Solutions', 'Germany' => 'Deutsche Manufacturing', 'Japan' => 'Nippon Electronics'} Explanation: TechFlow Solutions has the highest revenue in USA, Deutsche Manufacturing has the highest in Germany, and Nippon Electronics has the highest in Japan Input: No parameters Output: {'USA' => 'Cloud Code Academy', 'Australia' => 'Aussie Commerce'} Explanation: If only USA and Australia have accounts with non-null revenue, only these countries appear in the result
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