with BACKUP controlfile option must be completedsql> ALTER DATABASE open resetlogs; Sql>To view the recoverable timestamp or SCN point, execute the following SQL statement:Select Scn,to_char (TIME_DP, ' Yyyy-mm-dd hh24:mi:ss ') from Sys.smon_scn_time Order by To_char (TIME_DP, ' Yyyy-mm-dd hh24: Mi:ss ') desc;It is not recommended to use this method to recover data. Method Two:Empty the data table you want to recover before you manipulate the recover
Java
Time
Javascript
Math. Round (new date (). gettime ()/1000)The unit of the value returned by gettime () is millisecond.
Microsoft. NET/C #
Epoch = (datetime. Now. touniversaltime (). ticks-621355968000000000)/10000000
MySQL
Select unix_timestamp (now ())
Perl
Time
PHP
Time ()
PostgreSQL
Select extract (epoch from now ())
Python
Import time first and then time. Time ()
Ruby
Obtain UNIX
php5.1 the time stamp above and the actual time difference 8 hours, the solution is as follows1, the simplest way is not to use the php5.1 versionObviously this is not the preferred Method!!! 2, modify PHP.ini. Open php.ini Find Date.timezone remove the previous semicolon = after adding Asia/shanghai, restart Apache server can--The disadvantage is that if the program put on someone else's server, can not modify the php.ini, it will not be. 3, add the initialization statement of the time in the p
(saved by the program) to the stored procedure, which deletes the ID values from memory and then inserts the change data back into memory , this logic can simplify all the processing of insert/update/delete; (Figure1: Change data capture) Scenario Two: With change tracking (Chang Tracking) This feature, change tracking includes unique values for the trace table, as well as field sys_change_operation, enumeration values (I=insert, U=update, D=delete), There is also the version number of the DM
PHPclass Time{ /** * Returns the timestamp of the start and end of today * * @return Array*/ Public Static functiontoday () {return [ Mktime(0, 0, 0,Date(' m '),Date(' d '),Date(' Y ')),Mktime(23, 59, 59,Date(' m '),Date(' d '),Date(' Y ')) ]; } /** * Returns the timestamp of the start and end of yesterday * * @return Array*/ Public Static functionyesterday () {$yesterday=D
Label: TimeStamp The SQL Server timestamp data type is independent of time and date. SQL Server Timestamp is a binary number that indicates the relative order in which data modifications occur in the database. The implementation of the timestamp data type was originally intended to support the SQL Server recovery algor
PHP gets the start timestamp and end timestamp of today, yesterday, last week, this month, mainly using PHP's time function mktime. Let's start with a straight-through example to illustrate how to use Mktime to get the start timestamp and end timestamp for today, yesterday, last week, this month, and then introduce the
When you create a table with a field type of timestamp, the default build statement for that field is:CREATE TABLE ' test ' ( ' id ' int (one) default null, ' ctime ' timestamp not null default Current_timestamp on UPDATE CU Rrent_timestamp) Engine=innodb DEFAULT CHARSET=GBKIf there are two field types timestamp, the resulting statement is:CREATE TABLE ' test '
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 when you set the timestamp to on Updatecurrent_timestamp, the other timestamp fields need to explicitly set the default
();
System.out.println (Student1.getversion ());
System.out.println (Student2.getversion ());
} catch (Exception ex) {ex.printstacktrace ();
if (null! = tx) {tx.rollback ();
}} finally {Session.close ();
}
}
}The output information for the corresponding console is as follows:
Hibernate:select student0_.id as id0_, student0_.version as version0_, Student0_.cardid as C
ardid0_, student0_.age as age0_, Student0_.name as name0_ from student student0_ where
St
Mysql TIMESTAMP Usage Details, mysqltimestamp
1. TIMESTAMP variants
TIMESTAMP timestamps can have multiple different features during creation, such:
1. Refresh the data column when creating a new record or modifying an existing record:
TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
2. Set this field to
MysqlTIMESTAMP (timestamp) details bitsCN.com
TIMESTAMP variant1. timestamp default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP refresh this data column when creating a new record and modifying an existing record2, timestamp default CURRENT_TIMESTAMP when creating a new record, set this field to the current time, but
(1) Time stamp(2) Load type(3) RTP Header(1) Time stampThere are three ofA real time unit timestamp_increse= (unsigned int) (90000.0/framerate);//+0.5);One is the current time of the sample send Ts_currentOne is increment timestamp Timestamp_increse, non-fat incrementTs_current=ts_current+timestamp_increse;Rtp_hdr->timestamp=htonl (ts_current);(2) Load type(3) RTP HeaderOne is a 12-byte RTP header beginning
Label:BackgroundThe Start_time,end_time time field in the previous Business feedback table was automatically updated over time, which is not the business will, and the serious point is that it is going to fail.There are date,datetime,timestamp time types in MySQLSee what the official documents say. The date type is used for values with a, a date part, and no time part. MySQL retrieves and displays DATE values in ' yyyy-mm-dd ' format. The supported ra
Tag: Timestamp
In the previous blog, "Introduction to a French timestamp server", we introduced how to obtain the timestamp response in two steps:1. Use OpenSSL to generate a timestamp request file;2. Use the curl command in Linux to send timestamp requests and receive
The examples in this article describe the SQL Server timestamp feature and usage. Share to everyone for your reference, specific as follows:
The concept of timestamp has been blurred, I believe that a lot of friends will also be mistaken: The timestamp is a time field, each time you add data, fill in the current time value. In fact, this misled a lot of friends.
Books that are online in SQL Server say this:
The SQL Server timestamp data type is independent of time and date. SQL Server Timestamp is a binary number that indicates the relative order in which data modifications occur in the database. The timestamp data type was implemented initially to support the SQL Server recovery algorithm. Each time the page is modified
In SQL Server, the following is the connection:The SQL Server timestamp data type is independent of the time and date. SQL Server timestamp is a binary number that indicates the relative sequence of data modifications in the database. The timestamp data type was initially implemented to support the SQL Server restoration algorithm. Each time a page is modified, t
In MySQL, the difference between the date function datetime and timestamp will be very detailed. The following section will summarize the comparison between datetime and timestamp in mysql.
Same: Display format consistent: YYYY-MM-DD HH: MM: SS;
Different:
Range: The range supported by datetime is '2017-01-01 00:00:00 'to '2017-12-31 23:59:59 ′
The TIMESTAMP valu
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