Questions tagged [django]
The django tag has no usage guidance.
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0answers
21 views
Database Design for tracking user flow
I want to design a user tracking system between different tables/models. I want to track the user's progress. There is a Module table which is related to sections and sections are related to sub-...
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29 views
Why my heap read/heap hit ratio is negative?
I have a database with 200k rows (one of this column is a jsonb data type column), i'm using this database to store some various devices informations (currents, pressure, etc...) and i'm using this ...
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0answers
80 views
PGPool II + Django w/ psycopg2 load balancing
I've a pool of applications running django 1.6 with psycopg2 on top of a PGPool II with two backends PostgreSQL servers. But all queries (read and/or write) are going to master PostgreSQL even SELECT.
...
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0answers
40 views
Scalable way to manage aggregated statistics over time in hierarchy?
I'm using a closure table (Postgres through Django) to roll up stats through a hierarchical tree. When a node that is 10 layers deep has a value that increases, each parent's sum total of that value ...
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1answer
748 views
Django postgres multiple schema
I'm trying to develop a django interface for an existing postgresql db, the db makes use of various schemas, looking at the literature the following example should work, but it only returns the schema ...
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40 views
why can I sign-in through PyCharm, but not on a server using the same settings and credentials?
PROBLEM:
I can sign in on my laptop through PyCharm and DataGrip to database mydb using the settings:
host: localhost
port: 5433 (This is no typo)
database: mydb
user: myuser
password *******
If I ...
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0answers
45 views
Custom data type vs. extra table
I am developing a Django application that consists of the core app and plugin apps. Plugin apps are meant to be installable/unninstallable. Some of that apps are going to affect the content of the ...
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1answer
3k views
How to fix all duplicate key value violates unique constraint
I have a Postgres database that I created with a Django application. When I transferred it over, it never reindexed anything and it gives me errors trying to do this. It seems as if there are lots of ...
0
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1answer
35 views
Mongo DB Memory Utilisation freezes app needs restart
I am running a project using Mongo DB and Django, I have 2 separate instance for my Django project and database each 16GB ram t2xlarge ubuntu ec2 instances.
I am facing issue that within a day or two ...
3
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1answer
70 views
Modelling a database for a travelling business that involves Vehicules, Routes, Subroutes and Prices
I am working on travelling app, where users can book online vehicles to travel.
On the customer side I would like this flow:
Users have to select a from location and a to location
Enter how many ...
0
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1answer
207 views
MySQL select returns no rows while there are many
I'm using django to create a database and I manually created a test values in the database by creating objects and saving them to the database.
Now when I run this query:
select TABLE_NAME,
...
1
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2answers
1k views
Psycopg2 - PGBouncer - Postgresql > Server does not support SSL but SSL was required
I've setup my Django application to use SSL while connecting to the Postgresql database via pgbouncer. I'm using Psycopg2 library.
I've done this before successfully, so I just did the same steps ...
3
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1answer
66 views
Getting Postgres CREATE TABLE statements
I created some tables (9, to be exact) with a Django (1.9.6) migration and now I'm trying to get simple CREATE TABLE statements for them. I tried this answer, but using pg_dump in this way gives me ...
0
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1answer
48 views
Concurrent usage of rdbms, write 4K rows without lockdown [closed]
I am working on a django project using Postgresql. The use case is as follows:
A user needs to upload an excel (containing 2.5-4K rows) 2-3 times daily. There will be 100s of users (somewhere between ...
0
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1answer
222 views
MySQL query taking a long time
I have a performance issue with a MySQL query that takes a long time. I'm trying to figure out why.
I'm using Django, a web framework that comes with ORM (Object relational Mappers) and basically ...
3
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1answer
83 views
Field/datatype for searchable address components?
I'm using Django with Postgres, and I'm looking for a field/datatype to store address components that come from Google Places API in this format:
"address_components": [
{"long_name": "27", "...
1
vote
1answer
71 views
Are lots of columns or joins better in Django
I am writing a simple Django app that stores and displays user objects with lots of attributes.
The user may have up to three hundred attributes.
These attributes however, can be grouped off.
For ...
0
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1answer
2k views
AWS Postgres RDS dumping data into sql format
My team has hosted a django project in AWS with a Postgres RDS instance. What is the proper way to get export the database into SQL or pg_dump?
0
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1answer
284 views
Django Multi Table Inheritance and Preserving Child and Child History
Place can have many different one to one fields, that’s why it can have bookstore, restaurant, and hardware store. But can the same place be both a bookstore and a restaurant at the same time? Now if ...
0
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1answer
26 views
Make a boolean false after every n number of minutes in MySQL
I have a table with a boolean value, if that value is not explicitly set to anything in the database for a few minutes by the back-end (django) then it must automatically be set to false. How do I do ...
3
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1answer
73 views
Postgresql tables seem duplicated (with suffixes such us pkey, hashes, etc)
due to some problems I came to check the state of my current database in production and I found that some tables are "duplicated". By duplicated I mean that there appear to be some clones of the ...
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0answers
25 views
Great slowdown of Django object list retrieval after moving from sqlite3 to mySQL on Amazon RDS
Be warned, there will be some Python programming stuff; my problem is tightly connected to database engine differences though - or at least I think so.
tl;dr: Querying for list of items and all ...
1
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1answer
955 views
Database in postgresql with missing rows, how to fill the missing rows with a backup copy?
I have a big problem and I'm not that good with postgresql since I use Django to make queries and I only have the basics of sql for querys.
My problem is that there was a problem where a super user ...
0
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1answer
349 views
Django Auth user as well as custom users table?
So we've been using djangos database authentication for a while now and have recently decided we want to implement a completely new login system for our website.
We are keeping the django ORM as we ...
