All the fun of writing the article will be a crappy CKEditor, PC forum repeatedly call the official replace the default editor for Ueditor, but so far no later, Baidu a large number of integrated version of 1.2, based on the use of the new version
1.1 Partitioned Tables Partition tableIn Oracle, if you encounter a particularly large table, you can use partitioned tables to change the performance of their applications.1.1.1 Partition Table Establishment:A company generates huge sales records
JS get current date time and other operation summary
1 2 3 4 5 6 7 8 9 10 11 12 13-14
var mydate = new Date (); Mydate.getyear (); Gets the current year (2-bit) mydate.getfullyear (); Get the complete year (4-bit, 1970-????)
Mydate.getyear (); Get Current year (2-bit)Mydate.getfullyear (); Get full year (4-bit, 1970-????)Mydate.getmonth (); Get Current month (0-11, 0 for January)Mydate.getdate (); Get the current day (1-31)Mydate.getday (); Get Current week x (0-6, 0
Objective
We often encounter the problem of date and time in the front-end JavaScript development, and usually get a lot of processing functions to complete a simple date and time display effect. In order to improve the speed of the development of
JS get current date time and other operation summary
var mydate = new Date ();
Mydate.getyear (); Gets the current year (2-bit)
mydate.getfullyear (); Get full year (4-bit, 1970-????)
Mydate.getmonth (); Get the current month (0-11, 0 for
1, TRIM ([{{leading | TRAILING | BOTH}[Trim_character]| Trim_character} from]trim_source) function Parameter:leading if the leading parameter is specified, the Oracle database will remove any opening characters equal to Trim_character. Parameter:
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How to use date and calender classes in Java 2009-10-04 20:49Date and calendar are classes that provide time processing in the Java class Library, and because dates occupy an important place in the application of
Log4j configuration details, log4j details
1. Introduction to Log4jLog4j has three main components: Loggers, Appenders, and Layouts ). This can be simply understood as the log category, where the log is to be output, and in what form the log is
Preface: The previous article from the application level above introduced the next multi-threading several usages, have Bo friends on the async, await and other new grammar. It is true that no asynchronous multithreading is monotonous and tedious,
[Original] basic Extension Method usage, original extension method usagePreface
First, let's take a look at the description above msdn: the extension method enables you to "add" methods to existing types without creating new derived types,
ObjectiveFirst, let's look at the explanation above MSDN: extension methods enable you to "add" methods to existing types without creating new derived types, recompiling, or otherwise modifying the original type.In fact, it is the Microsoft Class
Use of some functions in sqlserver (05:
I. Time functions:
DateAdd ([year, Quarter, month, day], number, date)
Function Description: used for addition or subtraction within a specific time range
Parameter description: [year, Quarter, month, and day]
In the afternoon, a colleague executed a delete statement and executed 0.11 million records in an hour.
This statement is delete from table_name where rowid = 'xxxxaaa'
The execution plan is indeed indexed by a create_time-based index.
Later, many
Create Table ad_play_log_tmp
(
Ad_play_log_id number (10) Not null,
Play_date date,
Add_time date
)
Partition by range (play_date)
(Partition ad_play_log201101
Values less than (to_date ('2017-01-01 ', 'yyyy-mm-dd '))
Tablespace T1,
Partition
1. Simple date judgment (yyyy/mm/DD ):
^ \ D {4} (\-| \/| \.) \ D {1, 2} \ 1 \ D {1, 2} $ Ii. Evolutionary date judgment (yyyy/mm/DD | YY/MM/DD ):
^ (\ D {4} | \ D {2}) (\-| \/| \.) \ D {1, 2} \ 3 \ D {1, 2} $) | (^ \ D {4}
Year
\ D {1, 2}
Obtain the date range of the week based on the time range of the week.Obtain the date range of the week according to the week
/*** Return the range of Weekly Times of a month in a certain year * @ param weeks Weekly Times * @ return the range of
Explain the table partitions by day, by month, and by year in oracle.
Partition Table concept:
When the amount of data in a table increases, the speed of data query slows down, and the performance of applications degrades. In this case, you should
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