timestamp

Set date and time in java.sql.Timestamp

由 为君一笑 提交于 2020-12-27 06:49:07
问题 Please tell me how to set the date (current date minus one day) and time equal to 19:00:00 using such a construction? new java.sql.Timestamp(java.util.Calendar.getInstance.getTime().getTime()) LocalDateTime don't use. 回答1: I recommend you do it using the java.time (the modern date-time API). Solution, purely using the modern API: import java.time.LocalTime; import java.time.OffsetDateTime; import java.time.ZoneId; import java.time.ZonedDateTime; public class Main { public static void main

need work-around for handling timestamps in dataframe and get datetime

由 跟風遠走 提交于 2020-12-15 04:36:05
问题 I originally posted a question about plotting different datetime-sampling in the same plot, stored in many different dataframes. I got help understanding I needed to convert my time-column (‘ts’) to datetime. I struggled with this, still getting messed up plots. Turns out my conversion to datetime isn’t working, and this is a known thing, as stated here. A dataframe can’t store datetime in a column (why??), it converts it back to pandas._libs.tslibs.timestamps.Timestamp. I need to figure out

How to read timestamp and how to subtract two timestamps?

由 允我心安 提交于 2020-12-12 02:11:10
问题 I have the following code to get (timestamp) and (NOW timestamp). I subtract them to get the difference between them but I get a number like 123456 and I can not understand how much this number represent. I want to check if the difference between those two dates are less than one hour, how? final_time = new Date(2013, 11, 11, 11, 11); c_date = new Date(); offset_time = c_date.getTimezoneOffset(); var n1 = Math.abs(offset_time); current_date = new Date(c_date.getTime() - n1 * 60 * 1000); alert

How to read timestamp and how to subtract two timestamps?

由 坚强是说给别人听的谎言 提交于 2020-12-12 02:09:12
问题 I have the following code to get (timestamp) and (NOW timestamp). I subtract them to get the difference between them but I get a number like 123456 and I can not understand how much this number represent. I want to check if the difference between those two dates are less than one hour, how? final_time = new Date(2013, 11, 11, 11, 11); c_date = new Date(); offset_time = c_date.getTimezoneOffset(); var n1 = Math.abs(offset_time); current_date = new Date(c_date.getTime() - n1 * 60 * 1000); alert

How to read timestamp and how to subtract two timestamps?

由 巧了我就是萌 提交于 2020-12-12 02:08:48
问题 I have the following code to get (timestamp) and (NOW timestamp). I subtract them to get the difference between them but I get a number like 123456 and I can not understand how much this number represent. I want to check if the difference between those two dates are less than one hour, how? final_time = new Date(2013, 11, 11, 11, 11); c_date = new Date(); offset_time = c_date.getTimezoneOffset(); var n1 = Math.abs(offset_time); current_date = new Date(c_date.getTime() - n1 * 60 * 1000); alert

JOIN Multiple Table based on timestamp and another condition

由 佐手、 提交于 2020-12-07 00:30:50
问题 I want to join 3 tables which Table A have date and time in different field that need to be combined first so it can be compared on Table B using field timestamp. Table A userid | date_in | check_in --------+------------+---------- 145 | 2017-01-23 | 08:56:05 254 | 2017-01-24 | 08:56:54 202 | 2017-01-25 | 08:53:26 15 | 2017-01-26 | 08:47:40 Table B userid | checktime | sn --------+---------------------+--------------- 145 | 2017-01-23 08:56:05 | 0345135200184 254 | 2017-01-24 08:56:54 |

JOIN Multiple Table based on timestamp and another condition

由 冷暖自知 提交于 2020-12-07 00:30:37
问题 I want to join 3 tables which Table A have date and time in different field that need to be combined first so it can be compared on Table B using field timestamp. Table A userid | date_in | check_in --------+------------+---------- 145 | 2017-01-23 | 08:56:05 254 | 2017-01-24 | 08:56:54 202 | 2017-01-25 | 08:53:26 15 | 2017-01-26 | 08:47:40 Table B userid | checktime | sn --------+---------------------+--------------- 145 | 2017-01-23 08:56:05 | 0345135200184 254 | 2017-01-24 08:56:54 |

PostgreSQL timestamp踩坑记录

由 筅森魡賤 提交于 2020-11-24 08:39:34
PostgreSQL timestamp踩坑记录 项目Timezone情况 NodeJS： UTC+08 PostgreSQL： UTC+00 timestampTest.js const { Client } = require('pg') const client = new Client() client.connect() let sql = `` client.query(sql, (err, res) => { console.log(err ? err.stack : res.rows[0].datetime) client.end() }) 不同时区 to_timestamp 查询结果 测试输入数据为 1514736000 (UTC时间 2017-12-31 16:00:00 ,北京时间 2018-01-01 00:00:00 ) 1、 timezone = UTC BEGIN; SET TIME ZONE 'UTC'; SELECT to_timestamp(1514736000) as datetime; END; 直接查询： 2017-12-31 16:00:00+00 YES pg查询: 2017-12-31T16:00:00.000Z YES 2、 timezone = PRC BEGIN; SET TIME ZONE 'PRC'; SELECT to
订阅 timestamp