This question runs in a pre-configured Salesforce environment - no personal connection required.
Query all Account records where the Phone field is null. Return a list of Account names ordered alphabetically by Name. If all accounts have a phone number, return an empty list.
Examples:
Input: (none - queries org data)
Output: ['Account Name A', 'Account Name B', ...]
Explanation: Names of all accounts where Phone is null, sorted alphabetically
Input: (all accounts have phones)
Output: []
Explanation: When no accounts are missing a phone number, return an empty list
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