小编boo*_*yaa的帖子

无法在运行Ubuntu 14.04版的Docker中安装pip.见下面的日志.

root@57da7dd8a590:/usr/bin# apt-get install pip
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package pip
root@57da7dd8a590:/usr/bin#

我使用以下查询来查找具有3个以上员工的城市名称

SELECT M.NAME
FROM MasterCity M
INNER JOIN Employee E ON E.CityID = M.ID
GROUP BY E.CityID
HAVING count(E.CityID) >= 3;

它给了我以下错误

Column 'MasterCity.Name' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

怎么了.？提前致谢

我在表达式构建器中构建一个表达式来执行以下操作,但是这给了我一个错误:

@User::AccountID != ''