从Google Colab连接到Postresql数据库

问题描述：

我正在尝试将我的Google Colab连接到我的Postgres数据库。当我尝试从Jupyter Notebook连接到它时，它正在工作，因此我猜测我的凭据很好。这是我得到的错误：

I am trying to connect my Google Colab to my Postgres DB. When I try to connect to from Jupyter Notebook it's working, so I'm guessing that my credentials are fine. This is the error that I got:

无法连接到服务器：没有这样的文件或目录

could not connect to server: No such file or directory

服务器本地运行并在Unix域套接字上接受
连接 /var/run/postgresql/.s.PGSQL.5432？

Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

我该如何解决？我的Postgres在我的机器上运行。

How can I solve it? My Postgres running on my machine.

谢谢！

答

您还可以安装PostgreSQL

You can also install PostgreSQL in Colab.

# install
!apt install postgresql postgresql-contrib &>log
!service postgresql start
!sudo -u postgres psql -c "CREATE USER root WITH SUPERUSER"
# set connection
%load_ext sql
%config SqlMagic.feedback=False 
%config SqlMagic.autopandas=True
%sql postgresql+psycopg2://@/postgres

然后您可以使用％sql 或 %% sql magic

Then you can query using %sql or %%sql magic

df = %sql SELECT * FROM pg_catalog.pg_tables
df

从Google Colab连接到Postresql数据库

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