PG processing time is very flexible, +-*/both have supportIt's useful to have a extract function in the meantime, let's take a look at a few examples: [code]postgres=# Select Extract (Epoch from ' 1970-01-01 ':: timestamp);Date_part-----------0(1 row)postgres=# Select Extract (Epoch from ' 1970-01-01 00:00:01 ':: timestamp);Date_part-----------1(1 row)postgres=# Select Extract (Epoch from now ()-' 2013-07-01 ':: timestamp);Date_part----------------193
restart the mysql service.LAST_UPDATED2-------------------------------------------------------------If the MySQL server enables binary logs, you can use the mysqlbinlog tool to restore data from the specified time point (for example, from your last backup) until now or another specified time point. For information on enabling binary logs, see section 5.11.3 "binary logs ". For more information ab
Label:1--Simulating a disaster when restoring a Adventurework database example Stopat
2
3 BACKUP database AdventureWorks
4 to disk= ' D:\MSSQL\Databackup\ Adventureworks.bak '
5
6 BACKUP LOG AdventureWorks
7 to DISK = ' D:\MSSQL\Databackup\AdventureWorks.trn '
8 GO
9--after a disaster, try to create a tail-log backup of
AdventureWorks to
disk= ' D:\MSSQL\Databackup\ Adventureworkstail.trn ' with
norecovery;
15 GO
----------------------------
= 0x5730bbed>1.9 Back to the SQL window to refresh the cache and view the modified dataSql> alter system flush Buffer_cache; System altered. Sql> SELECT * from tv.t01 where name= ' ww ', no rows selectedsql> select * from tv.t01 where name= ' XZ '; ID NAME------------------------------------------ Note: Because it was an experiment, the database was not closed when the data was modifiedTwo. Example:
Zendstudiocan restore html files. for example, if the website first obtains the index. php variable from index.html, can I set a breakpoint on the html page and then go to the php page? Can I debug zendstudio after it is installed or configure something ?, You cannot add breakpoints on the html page ., HTML is the function of zend studio to render HTML files. for exampl
#140917 16:52:52 Server ID 1 end_log_pos 925 Query thread_id=1 exec_time=342 error_code=0SET timestamp=1410943972/*!*/;BEGIN/*!*/;# at 925#140917 16:52:52 Server ID 1 end_log_pos 1012 Query thread_id=1 exec_time=342 error_code=0SET timestamp=1410943972/*!*/;INSERT into T values (4)/*!*/;# at 1012#140917 16:52:52 Server ID 1 end_log_pos 1039 Xid = 63commit/*!*/;# at 1039#140917 16:51:50 Server ID 1 end_log_pos 1107 Query thread_id=1 exec_time=440 error_code=0SET timestamp=1410943910/*!*/;BEGIN/*!
Tonight open online on the single dress before the DA, see a lot of brute force attack alarm, too upset. So follow the online tutorial set a bit iptables, later encountered cracked, you can directly block IP. The command given in the tutorial also disables the ping, which prevents other clients from pinging my server, plus automatically shielding brute force against IP. Can follow ping to forbid, online also immediately prompt mail "Service alert:ping down on Dedibox", local test also ping impas
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