我试图从更新列中获取最大日期,但也从该表返回相应的全名,目前正在发生的是返回最新的updates.date,但是第一个updates.consultant当前正在返回好吧,我们需要MAX日期的正确全名。
SELECT customer.id,
customer.name,
customer.retainer_value,
customer.customer_type,
clientdetails.performance,
clientdetails.url,
members.fullname AS acc_manager,
u.maxdate,
u.fullname
FROM customer
LEFT JOIN clientdetails
ON clientdetails.id = customer.id
LEFT JOIN members
ON members.id = customer.consultant_name
LEFT JOIN (SELECT updates.clientid,
members.fullname,
Max(updates.`date`) AS MaxDate
FROM updates
LEFT JOIN members
ON members.id = updates.consultant
GROUP BY updates.clientid
ORDER BY updates.date DESC) u
ON customer.id = u.clientid
WHERE customer.switchedoff = 'N'
AND customer.companyid <> '3'
答案 0 :(得分:0)
我认为您的最简单方法是使用substring_index()
/ group_concat()
方法:
SELECT customer.id,
customer.name,
customer.retainer_value,
customer.customer_type,
clientdetails.performance,
clientdetails.url,
members.fullname AS acc_manager,
u.maxdate,
u.fullname
FROM customer
LEFT JOIN clientdetails
ON clientdetails.id = customer.id
LEFT JOIN members
ON members.id = customer.consultant_name
LEFT JOIN (SELECT updates.clientid,
substring_index(group_concat(m.fullname order by u.date desc separator '|'), '|', 1) as full_name
Max(updates.`date`) AS MaxDate
FROM updates u
LEFT JOIN members m
ON m.id = u.consultant
GROUP BY u.clientid
) u
ON customer.id = u.clientid
WHERE customer.switchedoff = 'N'
AND customer.companyid <> '3' ;