The title says it all. Here is the code snippet. async with EngineContext(uri=URI) as engine: session = async_sessionmaker(bind=engine, expire_on_commit=True)() async with session.begin(): stmt: Select = select(User).order_by(_GenerativeSelect__first=User.login_date.desc()).limit(limit=10) result = await session.execute(statement=stmt) Equivalent to the very simple query, SELECT * FROM User…
My app is creating sqlalchemy.Tables from a MySQL database and as it use tinyint(1) as boolean after select.select_from.all i am getting values with int instead of boolean. After that i am using json.dumps to pass it to a js receiver…
I have below PostgreSQL table, which is small sample of huge table employee emp_id | salary | rating | increment_year -------------------------------------- 28 3000 1 2023 25 2000 2 2023 30 1500 1 2021 28 1000 3 2022 32 1200 1…
I have created a table using the flask db migrate method. Below is how my model is class MutualFundsDataTest(db.Model): id = db.Column(db.Integer, primary_key=True, autoincrement=True) Name = db.Column(db.Text, nullable=False) MF_Code = db.Column(db.Text, nullable=False) Scheme_Code_Direct = db.Column(db.Text, nullable=True) Scheme_Code_Regular = db.Column(db.Text, nullable=True)…
Passing "SELECT"-based SQL queries works. But passing "DELETE"- or "GRANT"-based SQL executed in python without error but makes no change to my database (python 3.8, sqlalchemy 2.0.10). These "DELETE" and "GRANT" queries worked in Python 3.6, sqlalchemy 1.3.23. I could…
I need to use triggers in postgresql (preferably via SQLALchemy ORM). However, I can't seem to get to first base with creating one. As a basic test, I am trying to put the string "Hello world" into a column called…
I have an SQLAlchemy entity written for PostgreSQL dialect and it uses server_default=func.clock_timestamp(): row_created = sa.Column('row_created_', sa.DateTime(timezone=True), server_default=func.clock_timestamp(), nullable=False) I also need to use it with SQLite, which throws an error: sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) unknown function: clock_timestamp() How do I make…
I am using SQLAlchemy ORM. I have a Parent class and a Child class. Parent and Child are in a one-to-many relationship. A Parent has many children, potentially even 20k-30k. Here's how my classes are set up class Parent(Base): __tablename__…
Friends, hello everyone. We faced a problem at work that we couldn't solve. It became clear that simple there is no solution, so we decided to ask the advice of more experienced people on the forum. We have a PostgreSQL…
The following is valid SQL for PostgreSQL. INSERT INTO schema.table (id, letter) VALUES (1, 'a'), (2, 'b'), ... I would like to execute a similar, parameterized statement using SQLAlchemy. I am using SQLAlchemy 1.4* Connection.execute(), but I do not have…