Hello everyone, welcome back to Performance tuning training . Last week we discussed some of the problems in the cardinality calculation process in SQL Server. Today we continue with a detailed discussion of the new cardinality calculations
This article is very open to the eyes of people, over reprinted.
English Original address: http://highscalability.com/blog/2012/2/13/tumblr-architecture-15-billion-page-views-a-month-and-harder.html
CSDN Translation Original address: http://www.csdn.
MySQL yesterday a week ago a year ago the data here mainly used in the date_sub,Refer to the followingThe code is as follows:SELECT * from Yh_contentwhere Inputtime>date_sub (Curdate (), INTERVAL 1 day)where Inputtime>date_sub (Curdate (), INTERVAL 1
This article is very eye-opening, reproduced over.
English Original address: http://highscalability.com/blog/2012/2/13/tumblr-architecture-15-billion-page-views-a-month-and-harder.html
Csdn translated original address: http://www.csdn.net/article/201
Java get millisecond: system. currenttimemillis () Java get nanosecond: system. nanotime () (used to get very accurate time, recommended !) Java obtains the current date: gregoriancalendar date_1 = (gregoriancalendar) calendar. getinstance (); Java.
Basic Functions
Date () Get dates, format: 2004-2-28
Time () to get the date, format: 22:24:59
Now () Get date and time format: 2005-5-2 22:37:30
How to use:
D=date ()
Get Year: Years (d)
Get month: month (d)
Get Days: Day (d)
Get Day of the
Look at the effect chart
first, the next function:
1. Click "OK" to display the calendar
2. Click Hide again, or remove the calendar from the DOM. Like some repetition first, and second these two steps.
3. Let the calendar display the current
The simple use of Date and Time Processing Package Carbon in Laravel, laravelcarbon
Preface
We often need to process the date and time when writing PHP applications. This article will show you how to extend the Carbon-inherited API extensions from
Official address:
Http://docs.jquery.com/UI/Datepicker, official example:
http://jqueryui.com/demos/datepicker/。
A nice address for DIY JQuery UI interface effect site http://jqueryui.com/themeroller/
DatePicker Basic Use Method:
Copy Code
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