list column name in this sql:SELECT 
    date(ds) AS date,
    COUNT(DISTINCT umid) AS start_count
FROM 
    uapp_event_batch_log
WHERE 
    event_name = '$_session_start' AND
    Um_Key_PartID = 'Part003' AND
    date(ds) >= DATE_TRUNC('week', CURRENT_DATE - INTERVAL '7 day')
GROUP BY 
    date(ds)
ORDER BY 
    date(ds); Give two different versions of responses. Please separate the responses with 6 asterisk symbols: ******.
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