希望大家一切都好。
这是我的数据集的屏幕截图] 1
现在,实际的数据集目前有近三千行,而我正在努力做到的是将联系人从十二列分解为三列。
pollTimeout
有关如何处理此问题的任何建议? 谢谢大家!
答案 0 :(得分:2)
使用python manage.py sql myproject
:
1. In Explorer, view the folder that the error says egg cache directory is set to
2. Delete (or rename) the file mysql_python-1.2.5-py2.7-win32.egg-tmp
3. That's it. The command now works and creates a new file in there. (Haven't tested if I need to do this every time.)
答案 1 :(得分:1)
使用横向连接:
select t.company_name, v.*
from t cross join lateral
(values (t.contact, t.contact_position, t.email),
(t.contact_2, t.contact_2_position, t.contact_2_email),
(t.contact_3, t.contact_3_position, t.contact_3_email),
. . .
) v(contact, contact_position, email);
您可能要添加:
where v.contact is not null
但这从您的样本数据中并不明显。