date

问题 I have a table like this: Person smallint(5) act_time datetime 1 2020-05-29 07:00:00 1 2020-05-29 07:15:00 1 2020-05-29 07:30:00 2 2020-05-29 07:15:00 2 2020-05-29 07:30:00 1 2020-05-29 10:30:00 1 2020-05-29 10:45:00 The table above is an example with 2 different persons and there is a row for each quarter they are at work... What is the best way in MySQL to "convert" this table to another table where there is a column for "person", a column for "start" and one for "stop". So the result is

问题 I'd like to create a monthly date range within Pandas taking in consideration of business days. such as: dt_range = pd.date_range(start='2017-12-20', periods=5, freq='M') Meaning: starting on 2017-12-20, roll on every 20th for 5 months, if such roll date is not a business day, take the following roll date (but keep the 20th for next observation). Likewise: ending on a date, roll backwards, each 20th for 5 months. such as: dt_range = pd.date_range(end='2018-05-20', periods=5, freq='M') I have

问题 I posted a question a month or so ago about how to print out a listing of files and all occurrences of a regular expression in those files. The aim being to get a file like this: file1 A12345 file2 A12399 file2 A12599 file3 A11223 and so on. After some help from Miller and anttix (thanks again!), the expression wound up being: perl -lne 'print "$ARGV $1" while(/\<myxmltag>(..............)<\/myxmltag>/g)' *.XML > /home/myuser/myfiles.txt Now I'd really like to be able to add the file's create

问题 I want to list the most recent activity (from FilteredActivityPointer) per account (FilteredAccount). Problem is that activities are not directly linked to account but have contacts in between. So accounts can have multiple contacts. Multiple contacts can have multiple activites. The full entity model Question: How can I retrieve the most recent activity per account? I tried the following (using SQL Server 2016, Transact SQL): SELECT * FROM FilteredContact co cross apply (SELECT TOP 1 * FROM

问题 I'am building a small webapplication for personal business purpose. I have come far from looking around and looking how to program a webapplication. So I can added reservations and edit them and also delete them. The last days I have been looking how to save a date into Mysql database and how to show it in the webapplication. For so far its working but its not showing in the right format. If you see the attachment Date sample I want the date like this "30-04-2020" and not like "2020-04-30".

问题 I'm trying to add 30 days to a pre-order date and if today's date is later, display a text string and if not display another text string. Any ideas where I'm going wrong? {% assign assign pre_date = 259200 | plus: order.created_at | date: '%s' %} {% assign today_date = 'now' | date: '%s' %} {% if pre_date > today_date %} disply this {% else %} this {% endif %} 回答1: The date filter returns a string, even when you're using %s to get a number of seconds, so Shopify may be running into situations

问题 I am trying to convert current GMT time to CST time using JDK8. But my code always returns the same time for both the timezones. I also verified getAvailableIDs() has "CST". Calendar cal = Calendar.getInstance(); TimeZone timeZone = TimeZone.getTimeZone("GMT"); cal.setTimeZone(timeZone); // System.out.println("GMT time = " + cal.getTime()); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); sdf.setTimeZone(timeZone); String gmtDateStr = sdf.format(cal.getTime()); System.out

问题 I've spent a long time looking around for a solution for this and not found quite what I want. Efforts to adapt existing solutions for different problems have also not worked! I am using LookupSet to return a list of dates, then joining them to return a list: =Join(LookupSet(Fields!cPatSer.Value,Fields!cPatSer.Value,Fields!DDate.Value,"PatD")) I want to only show the most recent date from that list. Here is what I have tried so far: The above function wrapped in a Max function (doesn't work

问题 I have to create a table with MySql which can store date in the following format : I tried smth like : CREATE TABLE birth ( .... date DATE, ...... ); But it doesn't work since DATE format is YYYY/MM/DD... How can I do ? Thanks ;) 回答1: Dates do not have a "format" in MySQL (or in almost any other database). They are stored in some internal format, that is eventually presented to the user. If you want the date in a particular format, use dateformat() for output. In your case, dateformat(datecol

问题 Looking to reformat a column pulled from Excel into a dataframe that contains the numeric Excel format (e.g. 40182). as.date(40182, origin = "1899-12-30", format = '%b-%Y') Returns: [1] 5Jan2070 I'm looking for more along the lines of Jan-14 (short month, short year). Being fairly new to R, I have been unable to determine what the cause of this is. Switching the origin date doesn't seem to change anything either. Any help? 回答1: In excel, number 40182 gives the date 04-01-2010 when formated as