我有这个 Python 代码:
self.lock_tables("read", ['nets_permissions as n', 'devices_permissions as d'])
usrs = self.db.get("SELECT n.user_id FROM nets_permissions as n \
left join devices_permissions as d \
on n.user_id = d.user_id \
where d.user_id is null \
and n.network_id=%s and n.perm<>3", netid)
self.unlock_tables()
for usr in usrs:
self.lock_tables("write", ['devices_permissions'])
self.db.execute("INSERT devices_permissions SET \
user_id=%s, network_id=%s, device_id=%s, perm=%s",\
usr, netid, sensid, perm)
self.unlock_tables();
我首先进行查询以从两个表中检索一些 user_id。我想将此 user_id 保存在一个变量中,然后执行 for 循环将此记录插入另一个表中...
此代码不起作用。我收到此错误:
例外:为 Database.get() 查询返回多行
如何检索这多行,然后一次处理每个人?
谢谢你们。