What is the better way to insert a very large data into PostgreSQL Table? OS: Ubuntu 22.04 LTS DB: PostgreSQL 14 Framework: Python 3.11 Django For now I am using insert into statement of 100,000 rows at a time. It…
Using Python==3.10.12 and sqlalchemy==2.0.23 (and postgres 12 under Ubuntu, if that makes any difference): How do I serialize an existing SqlAlchemy query so I can deserialize it and fetch its results in another process? In other words, I have a…
Encountering difficulties in hosting my Flask application on Ubuntu on AWS due to a persistent error that I'm unable to resolve. The error, identified in the Gunicorn logs, specifically points to a TypeError where the 'Flask' object is not iterable.…
So, I am trying to create a query that counts the numbers of Redirects per week per Site. I made the below query which gives me almost the correct results, but if there are no Redirects, there are no count…
I have a table test_table: Column | Type | ------------+------------------------+ id | integer | attributes | json | With content: id | attributes ----+---------------------------- 1 | {"a": 1, "b": ["b1","b2"]} 2 | {"a": 2, "b": ["b3"]} 3 | {"a": 3}…
I have two existing apps. A node.js/react front-end (typical create-react-app with react 18.2) A python/flask/sqlalchemy backend that the front-end uses (via api calls with axios) to CRUD data from a SQL Server database. I am completely new to auth so…
I am trying to connect to an Azure SQL Server database, but I keep getting this error: (pyodbc.InterfaceError) ('IM002', '[IM002] [unixODBC][Driver Manager]Data source name not found and no default driver specified (0) (SQLDriverConnect)') I'm using this code snippet to try…
Sqlalchemy creates a new connection whenever you call create_engine. If you have multiple databases on the same instance, this gets tricky because Postgres can only support so many active connections. I have a topology where my backend needs to access…
I have working listens_for function, which inserts LoadHistory object before updating Load: @event.listens_for(Load, 'before_update') def before_update_load(mapper, connection, target): current_load_select = select(load_fields).where(Load.id == target.id) insert_history = insert(LoadHistory).from_select(load_history_fields, current_load_select) connection.execute(insert_history) And the task is to have similar function but which will insert…
I create table in PostgreSQL and insert to table nested XML(xml_part column): CREATE TABLE text_xml ( id numeric, xml_part XML ); insert into text_xml values (1, '<note><to>Tove</to><from>Jani</from><heading>Reminder</heading><body>Dont forget me this weekend!</body></note>'); insert into text_xml values (2, '<note><to>Tove</to><from>Alex</from><heading>Reminder</heading><body>Dont forget me this…