Question

我想知道如何使用不带Flask扩展名但具有在模板中吸引值（结果）的选项的SQLalchemy组成如下所示的请求：

// Quiet different sign-ness warnings
int length_needed = snprintf(... as above ...);
if (length_needed < 0 || (unsigned) length_needed >= sizeof buf) {
  fprintf(stderr, "Buffer too small");
  exit(EXIT_FAILURE);
}

我想写同样的请求，就像我可以通过SQLAlchemy（在下面写到）一样，没有Flask扩展。

class Finance(db.Model):
    __tablename__=='MAIN'
    id = db.Column(db.Integer, primary_key=True)
    month = db.Column(db.Integer)
    cost_with_vat = db.Column(db.Integer)
    profit = db.Column(db.Integer)

需要在模板中显示结果

profit = select([func.sum(order.columns.profit)])
profit = profit.where(or_(
         order.columns.cost_with_vat>0,
        order.columns.cost_with_vat=='?'))

profit_month = profit.where(order.columns.month==11)
result = connection.execute(profit_month).scalar()

Flask_SQLAlchemy选择，其中，标量，connection_execute

0 个答案: