From f1bbed6066b985d73e4ad2e0edc44c1614b55d78 Mon Sep 17 00:00:00 2001
From: roger_home_pc <roger_sun@outlook.com>
Date: Tue, 27 Jun 2023 22:26:42 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E4=BA=86=E4=B8=80=E7=82=B9?=
 =?UTF-8?q?=EF=BC=8C=E6=B2=A1=E6=80=9D=E8=B7=AF=E4=BA=86?=
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---
 orm/blue_forecast.py | 12 ++++++++++++
 orm/orm_db.py        |  7 ++-----
 orm/real_index.py    |  2 ++
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/orm/blue_forecast.py b/orm/blue_forecast.py
index e69de29..c324bd1 100644
--- a/orm/blue_forecast.py
+++ b/orm/blue_forecast.py
@@ -0,0 +1,12 @@
+from orm_db import *
+from sqlalchemy import select, desc
+
+try:
+    get_last_data_stmt = select(History).order_by(desc('id')).limit(1)
+    last_data_result = db_session.execute(get_last_data_stmt).scalar()
+    print(last_data_result)
+except Exception as e:
+    print(e)
+
+last_blue = last_data_result.blue
+print(last_blue)
\ No newline at end of file
diff --git a/orm/orm_db.py b/orm/orm_db.py
index 8a8e1b3..75ef3a8 100644
--- a/orm/orm_db.py
+++ b/orm/orm_db.py
@@ -1,6 +1,6 @@
 import sqlalchemy
 from sqlalchemy import create_engine
-from sqlalchemy.orm import declarative_base
+from sqlalchemy.orm import declarative_base, sessionmaker
 from sqlalchemy import Column, Integer, String, DATE
 
 # 创建数据引擎
@@ -72,8 +72,5 @@ class RedForecastAll(Base):
 # 创建数据表，下面部分没有联想
 Base.metadata.create_all(engine)
 
-
-from sqlalchemy.orm import sessionmaker
-
 Session_class = sessionmaker(bind=engine)  # 创建与数据引擎的绑定会话类
-session = Session_class()  # 实例化session连接
+db_session = Session_class()  # 实例化session连接
diff --git a/orm/real_index.py b/orm/real_index.py
index e69de29..7f711cf 100644
--- a/orm/real_index.py
+++ b/orm/real_index.py
@@ -0,0 +1,2 @@
+from orm_db import *
+