I have existing SQLite DB with large data in it. I want to query the data asynchronously using tortoise ORM. How do I connect the database and query the data?
There is not magical tool. The inspectdb option in Aerich works for mysql.
You can create your models and read data from old sqlite db by driver and insert into new database.
The bulk_create method can improve the process time.
Related
I am new to Django and have a question in regards to whether or not I have to re-enter data or can use existing data from a postgres database and apologize if this has been asked before.
I have a Postgres database in which I created with SQLAlchemy ORM. I use this database for data analysis and want to create a web app for the data presentation. I know that Django has its own modeling system and ORM, do I have to recreate the database from scratch since I created this with SQLAlchemy's ORM?
You can use inspectdb command from Django.
https://docs.djangoproject.com/en/4.0/howto/legacy-databases/
I have a SQL database administrate with Django (web Framework). On this database, items are only update.
In other side, I have a NoSQL database (document-oriented). Sometimes, I need to migrate the SQL Data to NoSQL document forms and insert it on the NoSQL database.
I saw this question: Migrate data from relational DB to NoSQL
But the answer does not suit me.
And I saw Django-nonrel can help me to get a connector to a NoSQL database.
In my case, are there tools or any solutions more appropriate than create classes and methods in Python by myself for transform SQL data to NoSQL document?
I used Django REST framework to write API, the Django ORM is really conveinent like DB migrate or relation field's query.
But now we have a case, there is a DB with about 30 tables with data in it. And we have to query the DB and write some API. So I think I can't use Django this time.
What develop tools do you recommand to write restful API in Python if your case have the database that already created tables in it?
You can use inspectdb command to create django models from existing database.
python manage.py inspectdb > models.py
Here is the docs: Integrating Django with a legacy database
I have a Django 1.5 application with a SQLite or MySQL database. At the local server I have an Oracle database which I typically connect to with a connection string
"TNS=TNS-name; UID=user; PWD=pwd;".
How is it possible to print data from the local Oracle database in my Django application? Actually, I want to transfer data from the Oracle database into my main SQLite/MySQL database. I've seen some tutorials how to use an Oracle database as main database source in a Django application, but I want to keep my main database source and just load some specific data from the Oracle database in a specific Django view.
Thank you.
I'm not quite sure if this is what you're looking for, but the Django Docs seem to do a good job explaining it (if I interpreted it correctly). In short, you need to add it to your list of databases in your settings file and create a router. The lookup chain for databases is detailed here.
I have a pyramid project that uses mongodb for storage. Now I'm trying to write a test but how do I specify connection to the mongodb?
More specifically, which database should I connect to (test?) and how do I use fixtures? In Django it creates a temporary database but how does it work in pyramid?
Just create a database in your TestCase.setUp and delete in TestCase.tearDown
You need mongodb running because there is no mongolite3 like sqlite3 for sql
I doubt that django is able to create a temporary file to store a mongodb database. It probably just use sqlite:/// which create a database with a memory storage.