#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
    demeter database
    name:device_info.py
    author:rabin
"""
from .__load__ import *

class Device_info(Model):
	__table__ = 'device_info'
	__comment__ = '设备管理'
	id = Fields(type='uuid', primaryKey=True, comment='设备ID', uuid='farm_id')
	farm_id = Fields(type='int', default='setting.farm', comment='园区ID', match='not')
	name = Fields(type='varchar(50)', comment='设备名')
	#hardware_id = Fields(type='bigint', comment='硬件id', match='number|硬件id必须是数字', unique=True)
	#hardware_id = Fields(type='bigint', comment='硬件id', match='number|硬件id必须是数字')
	hardware_id = Fields(type='varchar(500)', comment='硬件id')
	hardware_type = Fields(type='int', comment='硬件类型')
	gateway_id = Fields(type='uuid', comment='网关id')
	type_id = Fields(type='int', comment='设备类型id')
	value = Fields(type='varchar(1000)', comment='设备传过来的值')
	exp = Fields(type='varchar(500)', comment='表达式')
	max = Fields(type='float', comment='最大上限', match='numberFloat|最大上限必须是数字')
	min = Fields(type='float', comment='最小下限', match='numberFloat|最小下限必须是数字')
	cxnum = Fields(type='int', comment='超限次数')
	cxtype = Fields(type='int', comment='超限类型，1为超过上限，2为超过下限')
	cxdate = Fields(type='int', comment='首次超限时间')
	status = Fields(type='boolean', default='False', comment='设备连接状态')
	state = Fields(type='boolean', default='True', comment='数据存在状态')
	cdate = Fields(type='int', default='time', comment='创建时间')
	udate = Fields(type='int', default='time', comment='接入时间')
	inorder = Fields(type='int', default='0', comment='排序', match='number|排序必须是数字')
	oper = Fields(type='boolean', default='False', comment='操作类型')
	operdate = Fields(type='int', comment='操作时间')
	server_id = Fields(type='int', comment='服务id')
	product_id = Fields(type='int', comment='产品id')
	code_id = Fields(type='int', comment='命令码id')
	code_index = Fields(type='int', comment='命令码索引key')
	##ALTER TABLE demeter_device_info ADD exp varchar(500); 
	#ALTER TABLE demeter_device_info ADD inorder int default 100; 
	#ALTER TABLE demeter_device_info ADD oper boolean; 
	#ALTER TABLE demeter_device_info ADD operdate int; 
	#ALTER TABLE demeter_device_info DROP inorder;   
	#ALTER TABLE demeter_device_info ALTER hardware_id type varchar(500);
	#ALTER TABLE demeter_device_info ADD server_id int; 
	#ALTER TABLE demeter_device_info ADD product_id int; 
	#ALTER TABLE demeter_device_info ADD code_id int; 
	#ALTER TABLE demeter_device_info ADD code_index int; 
	'''
	1、增加一列ALTER TABLE table_name ADD column_name datatype;

	2、删除一列
	ALTER TABLE table_name DROP column_name;

	3、更改列的数据类型
	ALTER TABLE table_name ALTER column_name TYPE datatype;

	4、表的重命名
	ALTER TABLE table_name RENAME TO new_name;

	5、更改列的名字
	ALTER TABLE table_name RENAME column_name to new_column_name;

	6、字段的not null设置
	ALTER TABLE table_name ALTER column_name {SET|DROP} NOT NULL;

	7、给列添加default
	ALTER TABLE table_name ALTER column_name SET DEFAULT expression;

	作者：暗香抚动
	链接：https://www.jianshu.com/p/fe824d6ecfb0
	来源：简书
	著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。
	'''