原文链接:Jackson Date 1. Overview 概述 In this tutorial, we'll serialize dates with Jackson. We'll start by serializing a simple java.util.Date, then Joda-Time, and finally, the Java 8?DateTime. 在这篇,来看看Jackson库是如何序列化日期...
create table t (
id int,
p_date date,
quantity int
); insert into t values(1001,'2021-01-01',122);
insert into t values(1002,'2021-01-01',41);
insert into t values(1003,'2021-01-01',56);
insert into t values(1001,'2021-01-02...
方法一: create table 表名 as(取值逻辑sql) with date ; ————distributed by (分布字段) 方法二(针对已经有的表): delect from 库名.表名 where date_dt=系统时间 insert into 库名.表名(字段) 取值逻辑sql; 备注:可以多次插入 方法三(针对插入时用临时表): delect...
create table t (
id int,
p_date date,
quantity int
); insert into t values(1001,'2021-01-01',122);
insert into t values(1002,'2021-01-01',41);
insert into t values(1003,'2021-01-01',56);
insert into t values(1001,'2021-01-02...
def test(request): queryset = models.EntInfo.objects.all() data = [] for i in queryset: p_tmp ={ "entName":i.entName, "entLevel":i.entLevel, "entSerialnumber":i.entSerialnumber, "opStatus":i.opStatus, "frNa...
1.建表 create table t_window( name string, orderdate date, cost int ) row format delimited fields terminated by ','; 2.载入数据 load data local inpath '/opt/tmp/order.csv' into table t_window; 3.查询表数据 select * from t_window; 4.比较su...
Date d = new Date(); System.out.println(d);? 打印的结果不是地址,是时间,说明toString重写过了。? 获取时间毫秒值(从1970-1-1 0点到对象创建的毫秒值) long time = d.getTime(); System.out.println(time); 当前时间往后走 1小时 ?2...