我想运行此查询:
UPDATE up SET up.pts = uc.checkin_worth WHERE uc.email = up.email AND uc.company_id = up.company_id AND uc.email = 'test@gmail.com' AND uc.company_id = '4' AND uc.qrcode = 'j'
但是,我收到错误,因为我不知道如何在UPDATE查询中组合两个表(uc和up)。
任何人都可以帮我解决这个问题吗?
谢谢,
答案 0 :(得分:2)
只需使用普通的JOIN语法:
UPDATE up JOIN uc ON uc.email = up.email AND uc.company_id = up.company_id
SET up.pts = uc.checkin_worth
WHERE uc.email = 'test@gmail.com' AND uc.company_id = '4' AND uc.qrcode = 'j'
您还可以使用旧的逗号语法,它与原始查询更相似:
UPDATE uc, up
SET up.pts = uc.checkin_worth
WHERE uc.email = up.email
AND uc.company_id = up.company_id
AND uc.email = 'test@gmail.com'
AND uc.company_id = '4'
AND uc.qrcode = 'j'
答案 1 :(得分:1)
试试这个:
UPDATE up, uc
SET up.pts = uc.checkin_worth,
WHERE uc.email = up.email AND uc.company_id = up.company_id AND uc.email = 'test@gmail.com' AND uc.company_id = '4' AND uc.qrcode = 'j'