我有两个表beard,moustache定义如下:
+--------+---------+------------+-------------+
| person | beardID | beardStyle | beardLength |
+--------+---------+------------+-------------+
+--------+-------------+----------------+
| person | moustacheID | moustacheStyle |
+--------+-------------+----------------+
我在PostgreSQL中创建了一个SQL查询,它将组合这两个表并生成以下结果:
+--------+---------+------------+-------------+-------------+----------------+
| person | beardID | beardStyle | beardLength | moustacheID | moustacheStyle |
+--------+---------+------------+-------------+-------------+----------------+
| bob | 1 | rasputin | 1 | | |
+--------+---------+------------+-------------+-------------+----------------+
| bob | 2 | samson | 12 | | |
+--------+---------+------------+-------------+-------------+----------------+
| bob | | | | 1 | fu manchu |
+--------+---------+------------+-------------+-------------+----------------+
查询:
SELECT * …对于我的项目,我需要在端口80上使用mongodb.实际上我不能使用默认的mongodb端口(27017).我必须使用端口80.
如果我编辑配置文件:
sudo nano /etc/mongodb.conf
然后我将端口更改为80然后重新启动mongodb服务,当我尝试连接到mongodb时收到此消息
$ mongo --port 80
MongoDB shell version: 2.4.9
connecting to: 127.0.0.1:80/test
Fri Feb 6 14:16:42.705 Error: couldn't connect to server 127.0.0.1:80 at src/mongo/shell/mongo.js:147
exception: connect failed
如果我再次将端口更改为27017,则一切正常.
有人能帮我吗？