Flask04-SQL

from flask import render_template, flash, redirect
from app import app
from app import db, models
from forms import LoginForm, SheetForm, VulForm, EveForm
import datetime
import time


// 原始SQL       
select sheet.name,count(*) from vul inner join sheet on vul.sheet_id = sheet.id group by sheet.name;

// join操作
vuls_count = models.Vul.query.join(models.Sheet,
             models.Vul.sheet_id==models.Sheet.id) 
             .add_columns(models.Sheet.name)

// group操作
vuls_count.query(models.Sheet.name, func.count('*')) 
          .group_by(models.Sheet.name).all()

// join操作 加 group操作
vuls_count = models.Vul.query.join(models.Sheet,
             models.Vul.sheet_id==models.Sheet.id) 
             .add_columns(models.Sheet.name, func.count('*')).group_by(models.Sheet.name).all()

vul_count = models.Vul.query.filter_by(sheet_id=1).add_columns(models.Vul.level, func.count("*")).group_by(models.Vul.level).all()