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@@ -54,18 +54,26 @@ if __name__ == '__main__':
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logger.info("{}, 算法开始".format(str(os.getpid())))
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try:
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- # 连接数据库的两种方式
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- # 方式一：新dataframe写入数据库时，采用该方式可以不需要写sql语句；
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- # 该方式无法对数据库进行修改；
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+ # 创建数据库连接池
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db_engine_1 = create_engine(
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"mysql+pymysql://{}:{}@{}:{}/{}?charset=utf8".format(
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user1, password1, host1, port1, db1
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))
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+ Session = sessionmaker(bind=db_engine)
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+ # 取数示例
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+ sql = "select * from table"
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+ df_diag_ram = pd.read_sql(sql, db_engine)
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- # 方式二：该方式可以通过写update SQL语句，对数据库中的数据进行修改
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- conn = pymysql.connect(host=host2, port=port2, user=user2, password=password2, database=db2)
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- cursor = conn.cursor()
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+ # 修改数据库示例
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+ session = Session()
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+ sql = 'insert into table (data) values (:data)'
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+ params = {'data':1}
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+ session.execute(sql,params=params)
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+ session.commit()
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+ session.close()
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+
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+
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# 准备算法数据
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@@ -120,9 +128,7 @@ if __name__ == '__main__':
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else:
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# 修改
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- sql = '''update test_tb set data={} where sn='{}' '''.format(df_res['data'].values[0], (df_res['sn'].values[0]))
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- cursor.execute(sql)
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- conn.commit()
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+ pass
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logger.info("{} done".format(sn))
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except Exception as e :
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logger.error(traceback.format_exc)
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