The errors I am getting while migrating on PostgreSQL Heroku. Note: It is working fine on the local server. there is no column with 30 lengths even tried migrating after deleting all data and still getting the same error. This is the model of the project models.py Answer I just deleted the junk file inside the migrations>pycache
Tag: psycopg2
Inserting data into psql database with high performance
Assume, I have a Python program, and I have an Offer object Offer(title=’title1′, category=’cat1′, regions=[‘reg1’]). I want to add this Offer into psql db, with minimal number of queries (performance). Inserts of new regions and categories are rare (number of regions and categories is limited (and are unique), but number of offers is unlimited). Basically Regions and Categories can be
inserting into Postgres table with a foreign key using python
I am trying to insert data from a json into my postgres table with python (psycopg2). This json is huge and now I am questioning what the proper way is to insert all of this data. What makes it difficult for me is that the table has a reference to another table. I want to refer to the id of
ON CONFLICT DO UPDATE syntax and EXCLUDED error on cursor.executemany
I have a simplified postgres (ver 13) table below with updated rows generated in python with psycopg2. My question is when I update the price field in the rows, I can’t complete the update because of the following errors of ON CONFLICT DO UPDATE. If I don’t use ON CONFLICT DO UPDATE , I can update the chart but I
python psycopg2 select current_timestamp problem with timezone
I’m calling a simple select to obtain current timestamp with timezone with psycopg2 and it’s retrieving UTC time instead of my local time (-3). datetime.datetime(2021, 1, 13, 20, 49, 47, 931834, tzinfo=psycopg2.tz.FixedOffsetTimezone(offset=0, name=None)) In postgresql I’m doing: This retrieves (Argentina time -3): So this is correct, but in Python: Select method retrieves: So datetime object is comming with offset 0,
Problems instaling libpq-dev in ubuntu 20.04
I am currently trying to install libpq-dev to install psycopg2. The problem is, when I try to install it, an error occurs saying I don’t have the latest libpq5 version. However when I try to download the newer version of libpq5 the system says that I already have the latest version. An example of the error. Answer I would say
Postgresql/psycopg2 password authentication error even though user and password are correct
I am new to web development in Python and would really appreciate some help. I am trying to set up psycopg2/peewee on WSL (Windows machine). In my Python code I store all of the info I’ll need to access a Postgres database, and then attempt to connect to the database as follows: I am certain that I have a Postgres
Failing to install psycopg2-binary on new docker container
I have encountered a problem while trying to run my django project on a new Docker container. It is my first time using Docker and I can’t seem to find a good way to run a django project on it. Having tried multiple tutorials, I always get the error about psycopg2 not being installed. requirements.txt: Dockerfile: While running docker-compose build,
Sharing a postgres connection pool between python multiproccess
I am trying to use psycopg2’s connection pool with python’s multiprocess library. Currently, attempting to share the connection pool amongst threads in the manner described above causes: The following code should reproduce the error, which the caveat that the reader has to set up a simple postgres database. What I have already tried: Having each process open and close its
Exporting a PostgreSQL query to a csv file using Python
I need to export some rows from a table in a PostgreSQL database to a .csv file using a Python script: But when I run the script I get this: Does anyone know what can be wrong or give me a tip about? Answer The copy is not an SQL command, it is a command specific for the Postgres terminal