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Showing posts with the label Postgresql

How To Save To A Remote Server With Django

I'm fairly new to Python and Django. I've recently got a Django app working on localhost in… Read more How To Save To A Remote Server With Django

Query A Specific Json Column (postgres) With Sqlalchemy

I have a model with a JSON field: class Item(db.Model) ... data = db.Column(JSON, nullable=Fa… Read more Query A Specific Json Column (postgres) With Sqlalchemy

Python / Sqlalchemy Format Daterange Object

I am using the DateRange column type to save reservations for a booking system. My DB is PosgreSQL … Read more Python / Sqlalchemy Format Daterange Object

Basic Handling Of Unique Column Integrityerror With Django Orm

I have the following in my django model, which I am using with PostgresSql class Business(models.Mo… Read more Basic Handling Of Unique Column Integrityerror With Django Orm

Sqlalchemy: Alembic Bulk Insert Fails: 'str' Object Has No Attribute '_autoincrement_column'

My model looks like class Category(UserMixin, db.Model): __tablename__ = 'categories' … Read more Sqlalchemy: Alembic Bulk Insert Fails: 'str' Object Has No Attribute '_autoincrement_column'

Keyerror: 'database_url' In Django 1.4

I have a project on Django 1.4.3 and try to set up on my mac. But raise an error KeyError: 'DA… Read more Keyerror: 'database_url' In Django 1.4

Filter Using Exact With A Many_to_many Field Django Model

I have this definitions into models.py: class Group(models.Model): created = models.DateTimeFie… Read more Filter Using Exact With A Many_to_many Field Django Model

Using Data From Ajax In A Python Script

I'm trying to use a Python script to fill a PostgreSQL table with data received from an Ajax PO… Read more Using Data From Ajax In A Python Script

Error During: Create Extension Plpython3u; On Postgresql 9.6.0

I have installed PostgreSQL Server 9.6.0 and Python 3.4.2 on Windows 2012 R2 Server. I copied plpyt… Read more Error During: Create Extension Plpython3u; On Postgresql 9.6.0

Sqlalchemy - Performing A Bulk Upsert (if Exists, Update, Else Insert) In Postgresql

I am trying to write a bulk upsert in python using the SQLAlchemy module (not in SQL!). I am gettin… Read more Sqlalchemy - Performing A Bulk Upsert (if Exists, Update, Else Insert) In Postgresql

How To Scale Psycopg2 Insert And Select With Single Process In Python?

It takes average of about 0.300095081329 for my insert to go through to finish commit to postgres. … Read more How To Scale Psycopg2 Insert And Select With Single Process In Python?

Python Postgres Best Way To Insert Data From Table On One Db To Another Table On Another Db

I have the following python code that copies content of a table on postgres DB1 and INSERTS into a … Read more Python Postgres Best Way To Insert Data From Table On One Db To Another Table On Another Db

How To Store A Pandas Dataframe With Datetime.timedelta Type Data Objects Into A Postgresql D/b Using Sqlalchemy?

I would like to store a pandas dataframe containing columns of type timedelta64 in a Postgresql dat… Read more How To Store A Pandas Dataframe With Datetime.timedelta Type Data Objects Into A Postgresql D/b Using Sqlalchemy?

Django+postgres Fatal: Sorry, Too Many Clients Already

I get the 'FATAL: sorry, too many clients already' every now and then because I have a lot… Read more Django+postgres Fatal: Sorry, Too Many Clients Already

Recreating Postgres Copy Directly In Python?

I have a block of data, currently as a list of n-tuples but the format is pretty flexible, that I&#… Read more Recreating Postgres Copy Directly In Python?

Retrieve Full Connection Uri From Airflow Postgres Hook

Is there a neater way to get the complete URI from a Postgres hook? .get_uri() doesn't include … Read more Retrieve Full Connection Uri From Airflow Postgres Hook

Typeerror: Not All Arguments Converted During String Formatting In Psycopg2

When I run the below code with psycopg2: cur.execute( '''INSERT INTO logmsg (msg_ty… Read more Typeerror: Not All Arguments Converted During String Formatting In Psycopg2

Import Python Module Into Aws Lambda

I have followed all the steps in the documentation: https://docs.aws.amazon.com/lambda/latest/dg/la… Read more Import Python Module Into Aws Lambda

Concurrency Issue With Psycopg2, Redshift, And Unittest

I am in Python 2.7, using psycopg2 to connect to an Amazon Redshift database. I have unit tests, an… Read more Concurrency Issue With Psycopg2, Redshift, And Unittest

Timezone Aware Datetime To String?

I am retrieving a timezone aware DateTime object from my postgres db. Now I want to convert this da… Read more Timezone Aware Datetime To String?