Dbdbs' backup and recovery are important for DBAs. In the online mode, you have enabled the rollback and recovery mode for DB2 backup, to RESTORE a table space set, run the RESTORE and ROLLFORWARD commands to RESTORE the table space set.
For a DB2
A problem encountered when deploying a program. The MySQL definition is as follows:Copy codeThe Code is as follows:Create table 'example '('Id' integer unsigned not null AUTO_INCREMENT,'Created 'timestamp not null default
Get the time on the server: context. Timestamp------------------------------Specific time:Context. timestamp. timeofday. tostring ()Year, month, and day:Context. TimestampYear:Context. timestamp. YearMonth:Context. timestamp. MonthDate:Context.
One, string and Date (java.util.Date) each other1.1 String--Date String datestr = "2010/05/04 12:34:23"; New Date (); // Note format is formatted to match the format of the date string New SimpleDateFormat
About timestamp issues in RTPTimestamp unit: The unit in which the timestamp is calculated is not a unit of seconds, but a unit that is replaced by the sampling frequency, so that the purpose is to be more precise in the timestamp unit. For example,
PHP get Timestamp is implemented by the PHP time () function, the PHP get date is implemented by the PHP data () function, they are specifically how to implement, the following gives a concrete example.
Setting the time
This article is mainly to share with you PHP timestamp function in detail, mainly in the form of code and we share, hope to help everyone.
echo "Doomsday timestamp:". Strtotime ("2012-12-21")
2. Convert timestamps to System time
Date (' y-m-d h:i:s
The meaning of a time stampTime stamp refers to the total number of seconds GMT January 01, 1970 00:00 00 seconds (Beijing time January 01, 1970 08:00 00 seconds) up to now.Two, 1. JS Gets the current timestamp method:var timestamp = date.parse (new
To write some date processing with the database connection, the type of Pstmt.setdate () is java.sql.Date type, this type of conforming specification actually does not save the time and minutes in the database, so the access should use Settimestamp (
Comparison of several types of timestamp
TIMESTAMP
The timestamp type, unlike date, is that date cannot be accurate to milliseconds, and timestamp can be accurate to milliseconds, with a millisecond of 0-9 digits and a default of 6 bits.
Comparison of datetime and timestamp in the original address Http://database.51cto.com/art/200905/124240.htmMySQLThis article compares the datetime and timestamp in MySQL with an example, although these two methods actually represent the same type,
One, string and Date (java.util.Date) each other1.1 String--DateJava code
String datestr = "2010/05/04 12:34:23";
Date date = new Date ();
//Note format is formatted to match the format of the date string
DateFormat SDF = new
1.1 Get the current date + time (date + times) function: Now ()Mysql> Select Now (); + ——————— + | Now () | + ——————— + | 2013-04-08 20:56:19 | + ——————— +In addition to the now () function to get the current datetime, MySQL has the following
In the previous, encountered the use of ibatis operation of Oracle time accuracy lost, and yesterday encountered the JDBC Operation MySQL Time field problem, from the Internet to see the various styles of interpretation of these issues of the
As we all know, PHP's
time();mktime();
function can generate a 10-bit UNIX timestamp, but in JavaScript, use the
new Date().getTime()
The timestamp of the function is 13 bits accurate to milliseconds.So would it be possible to implement a
1, timestamp timestamp refers to the GMT January 01, 1970 00:00 00 seconds (Beijing time January 01, 1970 08:00 00 seconds) up to now the total number of seconds.
2, get the time stamp of the current time
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When multiple timestamp are present in a table and one is set to Current_timestamp, you often encounter#1293-incorrect table definition; There can is only onetimestamp column with Current_timestamp in DEFAULT or on UpdateclauseThe reason is that
In php, the date function can directly convert the timestamp into a date. Of course, there are some other methods. I won't talk much at the beginning of the article to avoid getting more and more difficult to understand, let's take a look at some
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