MySQL 更新查询加入和加入左

Question

我了解 mysql 的基础知识，需要帮助更新查询，其中选择查询是这样的：

SELECT f.FinalAmount,f.ActualAmount,fh.ActualPaid,p.Name package,f.FromDate,f.ToDate 
from customers c 
join fees f on f.CustomerID = c.ID 
join packages p on p.ID=f.PackageID 
left join fees_history fh on f.ID = fh.ReferenceID  
where c.ID='108239' and c.branch='664'

我想更新 f.FromDate 但知道如何做到这一点，因为 SELECT 语句需要加入查询。

Answer 1

直接：

UPDATE 

       customers c 
join fees f on f.CustomerID = c.ID 
join packages p on p.ID=f.PackageID 
left join fees_history fh on f.ID = fh.ReferenceID  

SET f.FromDate = ???

where c.ID='108239' and c.branch='664'

附注。 left join fees_history fh on f.ID = fh.ReferenceID 不影响更新，必须删除。