LibPQ | Import modules from local or web storage

If calling PQFinish, which "closes the connection to the server", is there any benefit to calling PQCancel beforehand?

i.e. if the connection is closed, would the PostgreSQL server cancel any in-progress queries on this connection, just as it would with PQCancel?

I have a DataFrame df which I retrieved from a Postgres database as follows

I need to run a ruby project with gems and specs. When I type bundle install I received:

I have just started using Docker as it has been recommended to me as something that makes development easy, but so far it has been nothing but pain. I have installed docker engine (v20.10.12) and docker composer (v 2.2.3) as per the documentation given by docker for Ubuntu OS. Both work as intended.

Whenever I new up a new container with docker compose, no matter the source, I have writing privilege issues to files generated by the docker container (for example a laravel application where I have used php artisan to create a controller file). I have so far pinpointed the issue to be as follows:

By default docker runs as root within the container. It "bridges" the root user to the root user on the local machine and uses root:root to create files on the Ubuntu filesystem (my workspace is placed in ~/workspace/laravel). Then when opening the files in an IDE (vscode in this instance) I get the error:

I had to automate my postgre database backup. As instructed by my software vendor I am trying to use pg_dump.exe (see below) file to take a backup but that prompts me for password.

.\pg_dump.exe -h localhost -p 4432 -U postgres -v -b -F t -f "C:\Backup\Backup.tar" Repo

So googled and found that as per "https://www.postgresql.org/docs/9.6/libpq-pgpass.html" I can create a pgpass.conf file within 'C:\Users\User1\AppData\Roaming\postgresql\pgpass.conf" which I did.

Then I tried to pass data of pgpass.conf file to env variable before executing my pg_dump command. But it is not working. Still I am getting prompt to enter password. This is the content of pgpass.conf file: *:*:*:postgres:password

Below is the code I am trying in PowerShell,

Hello SO & Django community,

My problem is related to Django 4, as the feature to use passfile to connect to Postgres has appeared in this version. Though I have went through the similar error message related questions about previous versions, I had no success in solving my problem.

What I am trying to do

I want to connect Postgres database DB_MyProject to a django MyProject. In Django 4, you may use a passfile instead of providing all user/password information in the settings.py. The documentation about this new feature is here. The concept of password file in Postgres is explained here, you may also read about connection service here.

Having followed these docs to my best understanding, I have done the following:

1. Created the following DATABASES entry in settings.py of the Django project, as advised here:

I am creating a FastAPI server with simple CRUD functionalities with Postgresql as database. Everything works well in my local environment. However, when I tried to make it run in containers using docker-compose up, it failed. I was getting this error:

line 187, in get_new_connection connection = Database.connect(**conn_params) File "/usr/local/lib/python3.9/site-packages/psycopg2/init.py", line 122, in connect conn = _connect(dsn, connection_factory=connection_factory, **kwasync) django.db.utils.OperationalError: could not translate host name "db" to address: Temporary failure in name resolution

On my local machine everything works perfectly.

my docker file

I'm trying to install psql on Mac (M1). I'm following this tutorial.

I'm in this step: brew link --force libpq ail, but I get the error Error: No such keg: /usr/local/Cellar/ail. How can I fix this?