Question

无法想象这个简单的sql。 crm_contact_id在整个表中使用相同的联系人ID进行更新。我试图让它等于我在执行select时查询等于的内容。

update events set crm_contact_id = c.id
from events as evts
inner join crm2.crm_retail_lead l on l.lead_number = evts.old_lead_number
inner join crm_contacts c on c.old_contact_id = l.contact_id

谢谢你看看。

Answer 1

当你这样做时：

UPDATE events... FROM events as evts JOIN [other tables]

您将获得 events 表的两个不相关的实例。这可能不是你想要的。固定版本看起来像这样：

update events evts set crm_contact_id = c.id
from crm2.crm_retail_lead l 
inner join crm_contacts c on c.old_contact_id = l.contact_id
where l.lead_number = evts.old_lead_number

Answer 2

您尚未在查询中放置任何WHERE子句.....使用where子句进行查询

update events set crm_contact_id = c.id
from events as evts
inner join crm2.crm_retail_lead l on l.lead_number = evts.old_lead_number
inner join crm_contacts c on c.old_contact_id = l.contact_id
WHERE column_name='value'

简单的更新

2 个答案: