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What's a good way to overwrite DateTime.Now during testing?
... test, which doesn't feel right. What's the best way to set the date to a known value within the test so that I can test that the result is a known value?
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How do I get elapsed time in milliseconds in Ruby?
...time_diff_milli(start, finish)
(finish - start) * 1000.0
end
t1 = Time.now
# arbitrary elapsed time
t2 = Time.now
msecs = time_diff_milli t1, t2
You will need to decide whether to truncate that or not.
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What are the differences between virtual memory and physical memory?
..., while maintaining a respectable performance for the softwares running.
Now the main question boils down to how the memory is being managed. What exactly governs where in the memory will the data belonging to a given software reside?
Possible solution 1: Let individual softwares specify expl...
Get DateTime.Now with milliseconds precision
...lly speaking, you can't. Usually the system clock (which is where DateTime.Now gets its data from) has a resolution of around 10-15 ms. See Eric Lippert's blog post about precision and accuracy for more details.
If you need more accurate timing than this, you may want to look into using an NTP clie...
Create a unique number with javascript time
... if you need the readable version, you're in for a bit of processing:
var now = new Date();
timestamp = now.getFullYear().toString(); // 2011
timestamp += (now.getMonth < 9 ? '0' : '') + now.getMonth().toString(); // JS months are 0-based, so +1 and pad with 0's
timestamp += ((now.getDate < ...
Difference between 2 dates in SQLite
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SELECT julianday('now') - julianday(DateCreated) FROM Payment;
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C# DateTime.Now precision
I just ran into some unexpected behavior with DateTime.UtcNow while doing some unit tests. It appears that when you call DateTime.Now/UtcNow in rapid succession, it seems to give you back the same value for a longer-than-expected interval of time, rather than capturing more precise millisecond incre...
Get a UTC timestamp [duplicate]
...! Finally I understand why people keep saying new Date().getTime() or Date.now() is UTC but when I try console.log(new Date()), it displays time in my timezone. The Date internally has the timestamp (milliseconds) in UTC (w/c is what is returned in getTime() or now()), and it also has "your timezone...
How do I get the current time zone of MySQL?
Anyone knows if there is such a function in MySQL?
17 Answers
17
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How to subtract 30 days from the current datetime in mysql?
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SELECT * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-add
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