timestamp

问题 I am currently trying to generate numerical features in a dataset by converting the dates to timestamps. If run on Mac, it works flawlessly, on windows it throws an OS Error: [Errno 22] Invalid argument which is probably due to windows not supporting unix timestamps from before 1970-01-01. I have dates from 1955 upwards. Here is my code: import time import datetime current_timestamp = time.time() df.loc[:, "FEATURE_num"] = df["FEATURE"].apply(lambda d: datetime.datetime.strptime(d, '%Y-%m-%d'

问题 Using the timestamp of PHP's time() function, I show the current time to the user with date(). Format: H:i => 13:57 But sometimes there seem to be leaps in time. My windows clock was showing 13:40 when I visited the page. But my website said 14:XX. I don't know the exact time any more. Another example: A user accessed the page "Who is online?" at 00:16. A user was listed with the time for his last action being 00:39. The last action time is written to the database on every page load. So the

问题 I've got an inactive system. It is supposed to delete users from inactive table after 15 minutes. I have also a code that logs the user out if it cant be found in that table. The inactive script updates user on every page refresh. This is the inactive code I tried and it doesn't work so far: $result = mysqli_query($con,"SELECT * FROM inactive"); while($row = mysqli_fetch_array($result)) if ($row['inactive'] > timestampadd(MINUTE, -15, now())) { }else { $db_query = "DELETE FROM inactive WHERE

问题 I have the following problem: I am using an archiving software that exports its data to an MS SQL database, one of the columns being designated Timestamp_S (which represents the unix time), and it is an 32 bit integer. This database needs to be queried by a different reporting software. The problem is that the reporting software requires its entries to have a field named "Timestamp" and also that the data type be SQL timestamp. I am currently trying to select the data that the archiving

问题 Im trying to convert a timestamp to a human readable date and time. I tried: String dateSt = 1386580621268; Log.i("*****", "date st is = "+dateSt); long unixSeconds = Long.parseLong(dateSt); Log.i("*******", "unix seconds is = "+unixSeconds); Date date = new Date(unixSeconds*1000L); // *1000 is to convert seconds to milliseconds SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy"); // the format of your date String formattedDate = sdf.format(date); System.out.println(formattedDate); The

问题 I know that we can use getTimestamp() to retrieve the timestamp from the ObjectId, but is there any way to generate an ObjectId from a timestamp? More specifically, if I have an input of month and year , then I want to convert it into Mongo ObjectID to query in db, how should I do this? 回答1: try this, > ObjectId("5a682326bf8380e6e6584ba5").getTimestamp() ISODate("2018-01-24T06:09:42Z") > ObjectId.fromDate(ISODate("2018-01-24T06:09:42Z")) ObjectId("5a6823260000000000000000") Works from mongo

问题 For 2016 Turkish Government decided to stay GMT+3 timezone to save daylight, but on android: Calendar calendar = Calendar.getInstance(); TimeZone tz = TimeZone.getTimeZone("UTC"); calendar.setTimeInMillis(timestamp * 1000); Date currentTimeZone = (Date) calendar.getTime(); calendar.add(Calendar.MILLISECOND, tz.getOffset(calendar.getTimeInMillis())); So the problem is; it's showing GMT+3 for the date before November: Wed Oct 26 18:00:00 GMT+03:00 2016 but for after November: Mon Nov 07 20:00

问题 I currently have table in a MySQL database which has a startDate and endDate which are both timestamps . This is linked to the code using hibernate. I can return these by using the following HQL SELECT startDate, endDate FROM Reservation where id = :id What I am trying to do is return these dates based on a given timezone. I know MySQL has a function CONVERT_TZ which can return the dates based on a given timezone, I'm wondering if HQL has a similar function? I know HQL has a TIMESTAMP_WITH

问题 I have two databases running on different servers in different timezones. There is a couple of tables which contains timestamp with timezone . I need to dump data from one database and to import it to another with correct timestamp and correct timezone. I use following command to dump data: pg_dump -a DB_NAME > dump.sql I see data are in old timestamp and timezone format: 2013-11-29 14:30:00+02 Then I use command to another server to restore dump: psql -d DB_NAME -f dump.sql And I see that

问题 I'm attempting to convert a string to a timestamp within SQL. The question is really quite simple, how can I convert this string into a timestamp that starts at midnight on that day? Within my database I also have a field stored in timestamp_micros either one of these could work and I think converting the micros to a timestamp would be easier than the string. For example 20170118 => timestamp Query: WITH allTables as ( SELECT event.date as date, count(*) as totalSessions, count(DISTINCT user