How to get query data converting foreign table's another column

Question

I'm now using sqlalchemy, fastapi develop some REST API. And facing some problem to join multiple tables

I have 2 tables as below

[campaigns]

class Campaign(Base):
__tablename__ = "campaigns"

id = Column(Integer, primary_key=True, unique=True, index=True)
campaign_name = Column(Stirng(100))
category = Column(Integer, ForeignKey('categories.id'))

[categories]

class Category(Base):
__tablename__ = "categories"

id = Column(Integer, primary_key=True, index=True)
name = Column(String(30))

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And when I query all the campaigns using db.query(models.Campaign), it returns

[
  {
    "campaign_name": "awesomecampaign_1",
    "category": 1,
    "id": 2,
  },
  {
    "campaign_name": "awesomecampaign_2",
    "category": 1,
    "id": 3,
  },
  {
    "campaign_name": "awesomecampaign_3",
    "category": 1,
    "id": 4,
  }
]

But actually I want to get category "name", not just id. like this

[
  {
    "campaign_name": "awesomecampaign_1",
    "category": car,
    "id": 2,
  },
  {
    "campaign_name": "awesomecampaign_2",
    "category": car,
    "id": 3,
  },
  {
    "campaign_name": "awesomecampaign_3",
    "category": car,
    "id": 4,
  }
]

=== What skills did I need to using for join these 2 tables?? Can anybody help this problem?