datediff

Hibernate Dialects + datediff function

由 风流意气都作罢 提交于 2019-12-01 09:09:40
问题 I have a problem in that the syntax for datediff in mysql is different from that in hsqldb: mysql: datediff(date1,date2) hsqldb: datediff(interval,date1,date2) The dialects in hibernate usually resolve these issues, however I don't seem to be able to find a way of creating a datediff restriction for hibernate. This is a real nuisance because it prevents me from unit testing with an in-memory hsql database since I have to 'hardcode' the format of datediff in a sql statement. If anyone has

how to get the number on months between two dates in sql server 2005

由 北战南征 提交于 2019-12-01 03:14:41
问题 I have a column in my sql server 2005 table that should hold the number of months an employee has been in service. Since I also have the date the employee was engaged, I want the "months_In_Service" column to be a computed column. Now if I use DATEDIFF(month,[DateEngaged],GETDATE()) as the formula for the months in service computed column, the results are correct some times and other times incorrect. What would be the better reliable way to get the number of months between the DateEngaged

Checking two TDateTime variables

由 こ雲淡風輕ζ 提交于 2019-12-01 01:07:46
I am using C++ Builder and have the following question: I am wanting to detect if a date/time is later than another date/time, and by how much. Here is my current code: TDateTime testFirstDate("11/09/2012"); TDateTime testFirstTime("14:00"); TDateTime testSecondDate("12/09/2012"); TDateTime testSecondTime("16:00"); TDateTime testCombined1 = testFirstDate + testFirstTime; TDateTime testCombined2 = testSecondDate + testSecondTime; TDateTime testDateDifference = testSecondDate - testFirstDate; std::cout << testDateDifference; In the above example, the following gets printed out: 31/12/1899 The

Javascript DateDiff

由 妖精的绣舞 提交于 2019-12-01 00:41:45
问题 I am having a problem with the DateDiff function. I am trying to figure out the Difference between two dates/times. I have read this posting (What's the best way to calculate date difference in Javascript) and I also looked at this tutorial (http://www.javascriptkit.com/javatutors/datedifference.shtml) but I can't seem to get it. Here is what I tried to get to work with no success. Could someone please tell me what I am doing and how I can simplify this. Seems a little over coded...? //Set

Checking two TDateTime variables

由 微笑、不失礼 提交于 2019-11-30 21:12:05
问题 I am using C++ Builder and have the following question: I am wanting to detect if a date/time is later than another date/time, and by how much. Here is my current code: TDateTime testFirstDate("11/09/2012"); TDateTime testFirstTime("14:00"); TDateTime testSecondDate("12/09/2012"); TDateTime testSecondTime("16:00"); TDateTime testCombined1 = testFirstDate + testFirstTime; TDateTime testCombined2 = testSecondDate + testSecondTime; TDateTime testDateDifference = testSecondDate - testFirstDate;

Difference between two DateTimes C#?

由 余生颓废 提交于 2019-11-30 11:41:47
问题 I need a function that can return the difference between the below two dates as 24. DateTime a = new DateTime(2008, 01, 02, 06, 30, 00); DateTime b = new DateTime(2008, 01, 03, 06, 30, 00); 回答1: You can do the following: TimeSpan duration = b - a; There's plenty of built in methods in the timespan class to do what you need, i.e. duration.TotalSeconds duration.TotalMinutes More info can be found here. 回答2: Try the following double hours = (b-a).TotalHours; If you just want the hour difference

get difference in time in HH:MM format php

由 半世苍凉 提交于 2019-11-30 09:14:54
问题 how can i get this to output HH:MM format? $to_time = strtotime("2008-12-13 10:42:00"); <--AM $from_time = strtotime("2008-12-14 8:21:00"); <-- PM $stat = round(abs($to_time - $from_time) / 60,2). "min"; what i got from this is 1299 mins but i cant figure out how to make it output 21h:41m 回答1: Firstly, 8:21:00 will be interpreted as 8AM unless you specified otherwise using DateTime::createFromFormat() . To work out time differences, use DateTime::diff() : $to = new DateTime("2008-12-13 10:42

Datediff performance

由 家住魔仙堡 提交于 2019-11-30 09:11:20
I have a number of days variable which I want to compare against a datetime column (senddate) . Im currently doing this : DECLARE @RunDate datetime = '2013-01-01' DECALRE @CalculationInterval int = 10 DELETE FROM TableA WHERE datediff(dd, senddate, @RunDate) > @CalculationInterval So basically anything that is older then 10 days should get deleted, we have Index on sendDate column but still the speed is much slower, I know the left side should not have calculation for performance reasons, but what is the optimal way of otherwise solving this issue? The expression WHERE datediff(dd, senddate,

Date Difference in MySQL to calculate age

由 人盡茶涼 提交于 2019-11-30 07:31:50
问题 I have a problem regarding the datediff MYSQL function, I can use it and it is simple. But I don't understand how to use it to collect differences within the table field. E.g. I have a column dob and I want to write a query that will do something like select dateDiff(current_timeStamp,dob) from sometable 'here dob is the table column I mean I want the difference from the current date time to the table field dob , each query result is the difference, the age of the user. 回答1: You mean like

How to convert given number of days to years, months and days in MySQL?

由 扶醉桌前 提交于 2019-11-30 07:30:39
问题 I am trying to get the date and time duration between the Loan taken and Paid date. I used the PHP date and time functions, but it is not always accurate. How can I do this accurately in MySQL? Let assume two dates, The Loan taken date 2009-05-24 and the Loan return date 2012-04-30 I write a MySQL query SELECT DATEDIFF('2012-04-30', '2009-05-24') `total_days`; return 1072 days, which is roughly 2 Years, 11 Months, 12 Days. Please do not answer with PHP code, I already try it. Here is the code
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