old_contents: from sqlalchemy import Column, Integer, String, Numeric, func
  from app import db
  
  class Rais(db.Model):
      __tablename__        = 'rais'
      ocupation            = Column(String(6), primary_key=True)
      cnae                 = Column(String(5), primary_key=True)
      cnae_section         = Column(String(1), primary_key=True)
      cnae_division        = Column(String(2), primary_key=True)
      literacy             = Column(String(1), primary_key=True)
      establishment        = Column(String(14), primary_key=True)
      simple               = Column(String(1), primary_key=True)
      municipality         = Column(String(7), primary_key=True)
      employee             = Column(String(11), primary_key=True)
      color                = Column(String(2), primary_key=True)
      gender               = Column(String(1), primary_key=True)
      establishment_size   = Column(String(1), primary_key=True)
      year                 = Column(Integer, primary_key=True)
      age                  = Column(Integer)
      wage_received        = Column(Numeric(17,2))
      average_monthly_wage = Column(Numeric(17,2))
  
      @classmethod
      def dimensions(cls):
          return [
              'ocupation',
              'cnae',
              'cnae_section',
              'cnae_division',
              'literacy',
              'establishment',
              'simple',
              'municipality',
              'employee',
              'color',
              'gender',
              'establishment_size',
              'year',
          ]
  
      @classmethod
      def agg_values(cls):
          return [
              func.avg(cls.age),
              func.avg(cls.average_monthly_wage),
              func.sum(cls.wage_received),
              func.count(cls.employee),
          ]
  
      @classmethod
      def value_headers(cls):
          return ['age', 'wage_received', 'average_monthly_wage', 'jobs']
  
new_contents: from sqlalchemy import Column, Integer, String, Numeric, func
  from app import db
  
  class Rais(db.Model):
      __tablename__        = 'rais'
      occupation           = Column(String(6), primary_key=True)
      cnae                 = Column(String(5), primary_key=True)
      cnae_section         = Column(String(1), primary_key=True)
      cnae_division        = Column(String(2), primary_key=True)
      literacy             = Column(String(1), primary_key=True)
      establishment        = Column(String(14), primary_key=True)
      simple               = Column(String(1), primary_key=True)
      municipality         = Column(String(7), primary_key=True)
      employee             = Column(String(11), primary_key=True)
      color                = Column(String(2), primary_key=True)
      gender               = Column(String(1), primary_key=True)
      establishment_size   = Column(String(1), primary_key=True)
      year                 = Column(Integer, primary_key=True)
      age                  = Column(Integer)
      wage_received        = Column(Numeric(17,2))
      average_monthly_wage = Column(Numeric(17,2))
  
      @classmethod
      def dimensions(cls):
          return [
              'occupation',
              'cnae',
              'cnae_section',
              'cnae_division',
              'literacy',
              'establishment',
              'simple',
              'municipality',
              'employee',
              'color',
              'gender',
              'establishment_size',
              'year',
          ]
  
      @classmethod
      def agg_values(cls):
          return [
              func.avg(cls.age),
              func.avg(cls.average_monthly_wage),
              func.sum(cls.wage_received),
              func.count(cls.employee),
          ]
  
      @classmethod
      def value_headers(cls):
          return ['age', 'wage_received', 'average_monthly_wage', 'jobs']
  
subject: Fix rais column name