问题描述
|
我有2张桌子(MysqL)
data_details
account_invoices
理想情况下,每个data_details都应具有一个account_invoices ID。 (data_details具有带有accounts_invoices的主键的外键)
由于某些原因,有一些data_details记录,而accounts_invoices表中不存在accounts_invoice_id
因此,我尝试使用已知的account_invoice ID更新这些data_details记录。这就是我所做的
update data_details
set account_invoice_id = 1
where account_invoice_id in (
select d.id
from data_details d left join accounts_invoices a
on d.account_invoice_id = a.id
where a.id is null
)
但是发生错误说
您可以在FROM子句中指定目标表\'data_details \'进行更新(错误1093)
有人可以帮我吗,谢谢
干杯
萨梅拉
解决方法
现在这可能是一个疯狂的猜测,但是我认为问题在于您更新了要查询的同一张表。我认为解决方法是使用一个临时表,如下所示:
update data_details
set account_invoice_id = 1
where account_invoice_id in (
select * from (
select d.id
from data_details d left join accounts_invoices a
on d.account_invoice_id = a.id
where a.id is null
) as t
)
还没有尝试过,所以可能全错了。
更新了SQL以修复注释中发现的我的错误。
update data_details
set account_invoice_id = 1
where id in (
select * from (
select d.id
from data_details d left join accounts_invoices a
on d.account_invoice_id = a.id
where a.id is null
) as t
)