mysql如何用作子查詢

Question

示例數據

日期	番茄	電話	書	筆
2022-05-15	2	2	3	1
2022-05-15	3	3	3	2

我想看

日期	番茄	電話	書	筆
2022-05-15	5	5	6	3

我用這個

insert into sales.copy 
select date, 
       sum(tomato), 
       sum(phone), 
       sum(book), 
       sum(pen) 
from copy 
where date = '2022-05-15';
GROUP BY date

delete from sales.copy
where date = '2022-05-15' and tomato < ( select max(tomato) from sales.copy where date = '2022-05-15' );

不起作用

delete from sales.copy
where date = '2022-05-15' and tomato < ( select max(tomato) from sales.copy where date = '2022-05-15' );

Answer 1

我找到了方法！ 謝謝大家！

delete from sales.copy WHERE date = '2022-05-15' AND tomato < ( select MAX(tomato) FROM (SELECT tomato from sales.copy where date = '2022-05-15') AS temp );

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