Mysql SQL查询-查找最大的数字

谁能帮帮我吗？我需要找到此查询，但无法将其显示为一个查询。我知道我写错了，但不知道如何改正。我需要它只显示预订时间最长的客户

SELECT CUSTOMERS.CUSTOMER_ID, CUSTOMERS.CUSTOMER_NAME, 
       ACCOMMODATION_BOOKINGS.CHECKIN_DATE, ACCOMMODATION_BOOKINGS.NIGHTS
FROM   CUSTOMERS, ACCOMMODATION_BOOKINGS
WHERE  CUSTOMERS.CUSTOMER_ID = ACCOMMODATION_BOOKINGS.CUSTOMER_ID
SELECT MAX(Nights) AS NIGHTS
FROM ACCOMMODATION_BOOKINGS, CUSTOMERS;

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这将为您提供所需的结果：

SELECT CUSTOMERS.CUSTOMER_ID, CUSTOMERS.CUSTOMER_NAME, 
       ACCOMMODATION_BOOKINGS.CHECKIN_DATE, ACCOMMODATION_BOOKINGS.NIGHTS
FROM CUSTOMERS
JOIN ACCOMMODATION_BOOKINGS
ON CUSTOMERS.CUSTOMER_ID = ACCOMMODATION_BOOKINGS.CUSTOMER_ID
WHERE ACCOMMODATION_BOOKINGS.NIGHTS = (
    SELECT MAX(NIGHTS) AS NIGHTS
    FROM ACCOMMODATION_BOOKINGS
);

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@P.Salmon，你是如何编辑它以这样的方式显示的？A take tour，read instructions B highlight code block和ctrl+k。谢谢你，它工作得很好，所以我不得不使用join语句？最好也将WHERE IN转换为join。你可以使用=运算符而不是IN，因为内部查询只返回一个值。@JitendraYadav将IN替换为=