expanding your app and person to person game play

... www.verypdf.com to remove this watermark W elcome to the MySQL Administrator’s Bible Like all books in the Bible series, you can expect to find both hands-on tutorials and real-world practical application ... administrator to manually start, stop, and restart the server In addition, links are used from this script to the /etc/rc.d/ directory structure where scripts are used to start up and shut down ... 275 Stored routine flow control .282 Recursion 284 Stored routines and replication 285 Stored function limitations 285 Stored routine backup and storage...

Ngày tải lên: 21/01/2014, 13:20

... net stop MySQL Once mysqld is installed as a service, you can use the Services GUI to start and stop it manually and toggle whether it starts and stops automatically when Windows starts and stops ... to start and stop automatically when Windows starts and stops, use the install-manual option instead of install Once mysqld is installed as a service, you can start and stop it on the command ... logging If your application uses MySQL Backup the upgrade could cause a problem in the way your application works Take the time to read and understand the bug fixes and new features added to each...

Ngày tải lên: 21/01/2014, 13:20

... is also customizable by allowing you to control which toolbars are present The Query History functionality combined with navigation buttons allows you to browse your query history and re-execute ... for you Just write your query and click the Execute button to store it on the server You can also examine and edit stored procedures and functions that are already created To this just click ... Back and Next buttons to browse through the history of the already executed queries Under the Tools menu you can start MySQL Administrator, the mysql command-line client, the Windows command line...

Ngày tải lên: 21/01/2014, 13:20

... SELECT INTO OUTFILE so you should make sure to save a copy of the table definition for restoration of the file The SELECT INTO DUMPFILE command works similarly to the SELECT INTO OUTFILE command However, ... variable autocommit controls autocommit mode, and is set to (ON) by default To use transactions, SET autocommit=0 in the client or start mysqld with the autocommit system variable set to (OFF) ... are some command-line tools available that can be used for table repair For example the Maria storage engine has command-line tool called maria_chk that can be used to check, repair, and optimize...

Ngày tải lên: 21/01/2014, 13:20

... Range Size TINYINT –128 to 127 to 255 byte SMALLINT –32,768 to 32,767 to 65,535 bytes MEDIUMINT –8,388,608 to 8,388,607 to 16,777,215 bytes INT –2,147,483,648 to 2,147,483,647 to 4,294,967,295 bytes ... string function FIND_IN_SET() and string comparison LIKE can be used to find exact matches and subsets See Appendix B for how to use FIND_IN_SET() and LIKE ■ Due to the binary nature described ... with NOT NULL) uses more storage space and more resources to process storage, retrieval, comparisons, and calculations The empty string (’’), and zero values such as and 0000-00-00 use less space...

Ngày tải lên: 21/01/2014, 13:20

... row The LOCK TABLES and UNLOCK TABLES commands are used by mysqld to acquire and release table-level locks on any table, regardless of storage engine The MyISAM and MEMORY storage engines use ... setup to manage a number of drives and make them appear to be a single drive to the server With mysqld, you will have better performance with dedicated partitions on separate disks for your data and ... file systems that are important to database administrators is the ability to work with large file sizes and to provide support for a large number of directories and files Except for ext2, all the...

Ngày tải lên: 21/01/2014, 22:20

... InnoDB, and may use others in a handful of projects IN THIS CHAPTER Understanding storage engines Using different storage engines Working with storage engines Understanding Storage Engines A storage ... be best for your application and how to best utilize the storage engine you choose ON the WEBSITE The default storage engine for mysqld is MyISAM To change this, set the default_storage_engine ... www.verypdf.com to remove this watermark Storage Engines Maria command-line tools Maria supports a number of command-line tools that operate in a similar fashion to the corresponding MyISAM tools Table...

Ngày tải lên: 21/01/2014, 22:20

... the today field) and the total count of visitors up to today (in the vcount field) With each new visitor, update the visitors_today.count field: UPDATE visitors_today SET today = today + 1; To retrieve ... Calculates and stores the total running count in visitors_today.vcount ■ Resets the vistors_today.today field to zero Here is a sample event that updates the current and historic visitor count ... INTO visitors_stored (vcount, vcount_date) SELECT today, CURRENT_DATE() - INTERVAL DAY FROM visitors_today; UPDATE visitors_today set today=0, vcount=( SELECT SUM(vcount) as vcount FROM visitors_stored);...

Ngày tải lên: 21/01/2014, 22:20

... Allows user to execute the CREATE VIEW command to create views DELETE Allows user to execute the DELETE command DROP Allows user to execute the DROP command EXECUTE Allows user to run stored routines ... (tables, views, stored routines, and triggers) that the user created GRANT and REVOKE commands There are two commands that are used to control a user’s privileges The GRANT command is used to give an ... servers to host similar types of data For example, customers with IDs less than 500,000 are stored in the customers table on server1, and customers with IDs greater than or equal to 500,000 are stored...

Ngày tải lên: 21/01/2014, 22:20

... slave to be a new master and want to change other slaves to stop replicating the old master and start replicating the new master (see Chapter 22 for examples of slave promotion) To this, log in to ... areas for a database administrator to understand This chapter taught the tools and techniques used to work with replication and ensure it runs reliably The following topics were covered: ■ Logging ... www.verypdf.com to remove this watermark Logging and Replication After the backup is restored on the slave, log in and execute a START SLAVE command and then the SHOW SLAVE STATUS command: mysql>...

Ngày tải lên: 21/01/2014, 22:20

... tedious However, no automated tool can take into consideration the specifics of your system, and what is acceptable to your users There is a tradeoff to using automated tools, which may be acceptable ... www.verypdf.com to remove this watermark 593 18 Part IV Extending Your Skills The last two rows refer to the city and country tables, but what the first two rows refer to? You have to go back to the view ... last_name, and another index to find the records that meet the condition on customer_id, and then merge the two result sets The last_name index cannot help with the customer_id condition, and the customer_id...

Ngày tải lên: 21/01/2014, 22:20

... changed and combined to fit your needs For example, if your application allows end users to upload files to be loaded into the database, it would be completely appropriate for the Application role to ... need for a backup user to be able to bulk load data or execute stored routines related to the application A monitoring application that only needs to connect to the database to see if it is working ... requires access to the directories and files, a logical backup requires a database login, and a cold backup requires access to the directories and files as well as the power to stop and start the...

Ngày tải lên: 21/01/2014, 22:20

... powerful and flexible due to its simplicity It allows you to intercept queries and results, adding functionality and changing which mysqld process to send information to, what is sent to mysqld, and ... appear on the new master Stop and reset the slave process Stop the slave with the STOP SLAVE command, and then ensure the slave will not accidentally become re-enabled and try to read from the master ... able to handle stale connections, or have the ability to automatically reconnect a disconnected connection memcached Without a doubt, the fastest way to get data is to not have to connect to mysqld...

Ngày tải lên: 21/01/2014, 22:20

... row The LOCK TABLES and UNLOCK TABLES commands are used by mysqld to acquire and release table-level locks on any table, regardless of storage engine The MyISAM and MEMORY storage engines use ... setup to manage a number of drives and make them appear to be a single drive to the server With mysqld, you will have better performance with dedicated partitions on separate disks for your data and ... file systems that are important to database administrators is the ability to work with large file sizes and to provide support for a large number of directories and files Except for ext2, all the...

Ngày tải lên: 26/01/2014, 11:20

... InnoDB, and may use others in a handful of projects IN THIS CHAPTER Understanding storage engines Using different storage engines Working with storage engines Understanding Storage Engines A storage ... be best for your application and how to best utilize the storage engine you choose ON the WEBSITE The default storage engine for mysqld is MyISAM To change this, set the default_storage_engine ... www.verypdf.com to remove this watermark Storage Engines Maria command-line tools Maria supports a number of command-line tools that operate in a similar fashion to the corresponding MyISAM tools Table...

Ngày tải lên: 26/01/2014, 11:20

... the today field) and the total count of visitors up to today (in the vcount field) With each new visitor, update the visitors_today.count field: UPDATE visitors_today SET today = today + 1; To retrieve ... Calculates and stores the total running count in visitors_today.vcount ■ Resets the vistors_today.today field to zero Here is a sample event that updates the current and historic visitor count ... INTO visitors_stored (vcount, vcount_date) SELECT today, CURRENT_DATE() - INTERVAL DAY FROM visitors_today; UPDATE visitors_today set today=0, vcount=( SELECT SUM(vcount) as vcount FROM visitors_stored);...

Ngày tải lên: 26/01/2014, 11:20