This question runs in a pre-configured Salesforce environment - no personal connection required.
Query all accounts and return a Map where the key is the Account Type (such as Customer, Prospect, Partner) and the value is the sum of AnnualRevenue for accounts of that type. Only include accounts with non-null Type and non-null AnnualRevenue values. Use aggregate SOQL queries with GROUP BY to efficiently calculate sums per type.
Examples:
Output: {'Customer' => 450000000.00, 'Prospect' => 125000000.00}
Explanation: Sums the AnnualRevenue for all Customer accounts and all Prospect accounts
Output: {'Partner' => 75000000.00}
Explanation: Only Partner accounts exist with non-null revenue in the org
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