在 SQLAlchemy 中的原始 SQL 查询中实现占位符

Question

如何在 SQLAlchemy 的原始 SQL 查询中实现占位符？

try:
    username: 'Pat'
    email: 'pat@gmail'
    password: 'pat'
    engine.execute("INSERT INTO users (username, email, password) VALUES (:username, :email, :password)", 
    {"username": username, "email": email, "password": password})
    session = db_session()
    session.commit()
    print('Inserted into db')
except:
    print('not inserted')

Answer 1

占位符被指定为 arguments 来execute ：

from sqlalchemy.sql import text

engine.execute(text("INSERT INTO ..."), username=username, email=email, password=password)

.. 或者如果您想将您的字典扩展为 arguments，您可以使用**arguments ，其中arguments = {"username": username, "email": email, "password": password}

确保将查询包装在text()调用中以扩展占位符。