Using PostgreSQL array to store many-to-many relationship using sqlalchemy
Using PostgreSQL Array to Store Many-to-Many Relationship Using SQLAlchemy in C
In C, you can use the SQLAlchemy library to work with PostgreSQL arrays to store many-to-many relationships. Here's an example of how you can achieve this:
// Define the table for the many-to-many relationship
class User(Base):
__tablename__ = 'user'
id = Column(Integer, primary_key=True)
name = Column(String)
class Group(Base):
__tablename__ = 'group'
id = Column(Integer, primary_key=True)
name = Column(String)
# Define the association table
user_group = Table('user_group', Base.metadata,
Column('user_id', Integer, ForeignKey('user.id')),
Column('group_id', Integer, ForeignKey('group.id'))
)
# Define the relationship in the User and Group classes
class User(Base):
# ...
groups = relationship("Group", secondary=user_group, back_populates="users")
class Group(Base):
# ...
users = relationship("User", secondary=user_group, back_populates="groups")
This example demonstrates how to use SQLAlchemy to define a many-to-many relationship between the User and Group classes and store it using PostgreSQL arrays.
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