Trying to do a self join on a model but am getting confused how to do so in sqlmodel ORM. Something equivalent to the use of following SQL in Postgresql. SELECT tt.id, ttp.parent_name, tt.name FROM target_table tt, (select DISTINCT bb.parent_id,…
Defining the class: from sqlmodel import Field, SQLModel, create_engine, Session, select, Column,String class person(SQLModel, table=True): id: Optional[int] = Field(default=None, primary_key=True) name: str = Field(max_length=100) nickname: str = Field(max_length=30) sqlmodel creates the table person: CREATE TABLE person( id SERIAL NOT NULL,…
from sqlalchemy import create_engine, text db_connection_str = "mysql+pymysql://user:pass@some_mariadb/dbname?charset=utf8mb4" #Don't worry while running the code , I had replaced all the values in the db_connection_str with my values engine = create_engine( db_connection_str, connect_args={ # "ssl": { # "ssl_ca": "/etc/ssl/cert.pem", # }…
I have a table called Gerechten with the columns: id, gerecht, beschrijving, categorie, prijs, url and sterren. In this table i have a lot of rows, so i used a jinja loop in the html script to loop through every…
I am working on custom types in sqlalchemy columns using TypeDecorator. I'm storing my data in JSONB inside Postgres DB, but in code I am serializing and deserializing it in a data class. But when I change any field of…
I can't connect to my database with SQLAlchemy. It throws an error that says: E sqlalchemy.exc.ArgumentError: Could not parse SQLAlchemy URL from string ' E postgresql://[my_username]:[my_password]@localhost:5432/tugas1-law-db" Here's my database.py implementation on FastAPI, which closely follows the FastAPI official guide: from…
I have an async FastApi service running on kustomizse behind nginx and a NLB. Been working all good but doing some profiling locally I noticed the db query I have using sqlalchemy asyncSessions() and AsyncEngine seems to be a bit…
I have a query such as: select_query = [text(f) for f in fields] with engine.connect() as conn: query = select(*select_query, MyTable.id).select_from( table(MyTable.__tablename__) ... Everything works fine except when the field (inside select_query) is camelcase. Is there any function or directive…
I have no problem with labeling second table ("jtable"), but how I can make the same with first one ("table")? Because I haven't any allowed methods to do this. async def get_join_table( db: AsyncSession, table: PostSQL | VoteSQL | UserSQL,…
I am seeing a connection error when i try to read data from postgressql in my jupyter notebook. The error suggests: Connection info needed in SQLAlchemy format, example: postgresql://username:password@hostname/dbname or an existing connection: dict_keys([]) As far as i can see…