[PYTHON/SQLMODEL] Session 클래스 : delete 메소드를 사용해 테이블 행 삭제하기

■ Session 클래스의 delete 메소드를 사용해 테이블 행을 삭제한다.

※ test.db 파일의 event 테이블에 데이터가 있는 것을 전제로 테스트해야 한다.

▶ 예제 코드 (C#)


from sqlmodel   import SQLModel, Session, JSON, Field, Column, create_engine, select
from typing     import List

class Event(SQLModel, table = True):
    id          : int | None = Field(default = None, primary_key = True)
    title       : str
    image       : str
    description : str
    location    : str
    tagList     : List[str] = Field(sa_column = Column(JSON))

databaseFilePath             = "test.db"
databaseURL                  =  f"sqlite:///{databaseFilePath}"
connectionArgumentDictionary = {"check_same_thread" : False}

engine = create_engine(databaseURL, echo = False, connect_args = connectionArgumentDictionary)

SQLModel.metadata.create_all(engine)

with Session(engine) as session:
    sql = select(Event)
    eventList = session.exec(sql).all()
    for event in eventList:
        print(event.id, event.title)
    print()

    eventCount = len(eventList)

    event = eventList[eventCount - 1]

    session.delete(event)
    session.commit()

    eventList = session.exec(sql).all()
    for event in eventList:
        print(event.id, event.title)

from sqlmodel import SQLModel, Session, JSON, Field, Column, create_engine, select

from typing import List

class Event(SQLModel, table = True):

id : int | None = Field(default = None, primary_key = True)

title : str

image : str

description : str

location : str

tagList : List[str] = Field(sa_column = Column(JSON))

databaseFilePath = "test.db"

databaseURL = f"sqlite:///{databaseFilePath}"

connectionArgumentDictionary = {"check_same_thread" : False}

engine = create_engine(databaseURL, echo = False, connect_args = connectionArgumentDictionary)

SQLModel.metadata.create_all(engine)

with Session(engine) as session:

sql = select(Event)

eventList = session.exec(sql).all()

for event in eventList:

print(event.id, event.title)

print()

eventCount = len(eventList)

event = eventList[eventCount - 1]

session.delete(event)

session.commit()

eventList = session.exec(sql).all()

for event in eventList:

print(event.id, event.title)