Django PostgreSQL Migration Issues

Based on your description, you're experiencing issues with data visualization when migrating from MySQL to PostgreSQL in your Django application. This is a common challenge when switching database backends due to the differences between these systems.

Potential Issues

1. PostgreSQL Version Compatibility:

   • Django supports PostgreSQL 13 and higher
   • You need either psycopg 3.1.8+ (recommended) or psycopg2 2.8.4+

2. Database Adapter Configuration:

   • The error might be related to your database connection settings
   • Note that support for psycopg2 is likely to be deprecated in the future

3. PostgreSQL-Specific Features:

   • You might need to use PostgreSQL-specific fields from django.contrib.postgres for certain data types

Recommendations

1. Check PostgreSQL Connection:

   • Verify your database settings in settings.py are correctly configured for PostgreSQL
   • Ensure you have the proper adapter installed: pip install psycopg (recommended) or psycopg2

2. Database Settings Example:

   PYTHONCopied
   DATABASES = {
       'default': {
           'ENGINE': 'django.db.backends.postgresql',
           'NAME': 'your_db_name',
           'USER': 'your_db_user',
           'PASSWORD': 'your_password',
           'HOST': 'localhost',  # Or your PostgreSQL server address
           'PORT': '5432',       # Default PostgreSQL port
       }
   }

3. Data Type Differences:

   • Check if your models use any MySQL-specific data types that might not translate directly to PostgreSQL
   • Consider using PostgreSQL-specific fields from django.contrib.postgres if needed

4. Migration Process:

   • Make sure you've properly migrated your data from MySQL to PostgreSQL
   • Some data types might need manual conversion

5. Environment Variables:

   • Check if you need to set environment variables like PGHOST or PGPORT for your setup

Without seeing the specific error messages or more details about your visualization code, these are general recommendations. If you can provide more specific error messages or details about how your visualization is failing, I could offer more targeted advice.