如何隐藏mysql中的列

Question

有没有办法在以下查询中“隐藏”百分比列？

SELECT 
    ((SUM(is_correct) / COUNT(*)) * 100) percentage, worker_id 
FROM 
    main_mturklog 
GROUP BY 
    worker_id HAVING percentage < 80

基本上，我只想在结果中查看worker_id。

Answer 1

SELECT 
    worker_id 
FROM 
    main_mturklog 
GROUP BY 
    worker_id 
HAVING ((SUM(is_correct) / COUNT(*)) * 100) < 80