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Tài liệu MySQL Administrator''''s Bible- P1 pptx
... a number of Internet companies solving systems issues More recently he formed Paragon Consulting Services (http://www.paragon-cs.com) to provide consulting services for companies seeking training ... Displaying Permissions 711 COLUMN_PRIVILEGES 712 TABLE_PRIVILEGES 713 SCHEMA_PRIVILEGES .714 USER_PRIVILEGES 715 Storage Engine-Specific ... behavior 298 Event limitations 299 Event backup and storage 300 Summary 300 Chapter 8: MySQL Views 301 Defining Views...
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Tài liệu MySQL Administrator''''s Bible- P2 docx
... the service, run net start servicename, where servicename is the servicename associated with mysqld For example, the following command starts a mysqld service installed with the default servicename: ... Install as Windows Service means the service is not installed The service name can be changed by selecting a new service name from the drop-down box or by typing a new service name into the drop-down ... before moving into a production environment Remove test database and access to it? [Y/n] y - Dropping test database Success! - Removing privileges on test database Success! Reloading the privilege...
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Tài liệu MySQL Administrator''''s Bible- P3 docx
... privilege system differences in how the GRANT and REVOKE commands work; some deviations are listed in the ‘‘Privileges and Permissions’’ section For more complete information on how the privilege ... materialized views are an implementation detail of how views are handled by a database management system The SQL standard covers syntax to create and drop views, but it does not specify that views should ... For example, Chapter discusses views and explains that MySQL does not use materialized views, showing examples of how MySQL parses and optimizes view queries MySQL deviates from how most database...
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Tài liệu MySQL Administrator''''s Bible- P4 pdf
... MySQL ■ CREATE VIEW can be specified as CREATE OR REPLACE VIEW view_name to create a view if a view with view_name does not exist, or delete the existing view and replace it with the new view being ... Requires a view name as an input Displays the name of the view (View), a CREATE statement that can be used to create the view (Create View), the character set of the session in which the view was ... information about managing permissions and privileges, and the FLUSH PRIVILEGES and FLUSH USER_RESOURCES statements FLUSH PRIVILEGES can also be run via mysqladmin; see the ‘‘mysqladmin’’ section...
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Tài liệu MySQL Administrator''''s Bible- P5 doc
... keywords are: ■ Exact numeric type: ■ NUMERIC(g,f) ■ DECIMAL(g,f) can be abbreviated as DEC ■ SMALLINT ■ INTEGER can be abbreviated as INT ■ BIGINT 170 Please purchase PDF Split-Merge on www.verypdf.com ... values involving microseconds are allowed for the TIME data type: ■ dd HH:ii:ss.uuuuuu ■ HH:ii:ss.uuuuuu ■ HHiiss.uuuuuu — As a string or as a number The following input values involving microseconds ... The preceding lists are provided to avoid errors due to incorrect formatting of microseconds Automatic updates The TIMESTAMP data type allows for automatic updating via the attributes DEFAULT...
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Tài liệu MySQL Administrator’s Bible- P8 pdf
... statements in view definitions ■ Using views to limit field and row data for security purposes ■ How views can simplify and abstract queries ■ Performance implications of views ■ Using views as check ... tables using an updatable view ■ Reasons a view may not be updatable ■ Logical errors that may occur when updating data using an updatable view ■ How replication handles views 318 Please purchase ... only be applied to views matching the pattern — even if the view references a matching table name Summary In this chapter, we have described: ■ How to create, change, and drop views ■ Invalid SELECT...
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Tài liệu MySQL Administrator’s Bible- P9 doc
... put the individual MyISAM tables on different hard drives to help increase performance Also, you can query individual MyISAM tables as well as the Merge table This can sometimes provide a tremendous ... InnoDB provides some scalability on up to eight CPU cores and 64 gigabytes of RAM It supports a high level of concurrent writes and is heavily used in typical online transactional environments ... in some cases ■ Table-level features — MySQL provides a handler for tables to have a CHECKSUM attribute, which can be seen in the TABLES system view in the INFORMATION_SCHEMA database Whether...
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Tài liệu MySQL Administrator’s Bible- P10 ppt
... total visitor count and a quarter of a second to return the results from the visitor count cache table If there are 100 visitors to a site in 30 minutes, it would take seconds per visitor * 100 visitors ... The visitors_today table holds the current count of visitors so far today (in 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 ... total visitor count for a time period in the past and then adding the count of visitors since the last calculation For example, at midnight daily, calculate the total visitor count for the previous...
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Tài liệu MySQL Administrator’s Bible- P11 doc
... *.* and REVOKE privilege_list ON *.* statements to grant and revoke only global level privileges The following example will grant all privileges (except the GRANT PRIVILEGES privilege) to the ’ops’@’192.168.%’ ... levels that privileges can be granted Global Global privileges apply to all databases on a MySQL server These privileges are stored in the mysql.user table You use the GRANT privilege_list ON ... level privileges The following example will grant all privileges (except the GRANT PRIVILEGES privilege) to the ’ops’@’192.168.%’ user These privileges apply only to the database user_db: GRANT ALL...
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Tài liệu MySQL Administrator’s Bible- P12 pdf
... query and slow query log files are used to log the activities occurring in the database If the general query log is enabled it logs all activity on the server In addition to the actual SQL statements ... that result in errors It is not advisable to turn on the general query log on a production machine unless it is really necessary Because it logs all server activity it can be quite a detriment ... password For big tables (larger than a million rows) it is advisable to use the chunksize option and specify a number of rows to divide the tables in smaller portions This allows for better concurrency...
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Tài liệu MySQL Administrator’s Bible- P13 pdf
... 4.2/s The InnoDB Data, Pages, Rows subsection provides very general information about InnoDB activity It can be used as a quick overview before moving to the appropriate subsection for more detailed ... should be very high — near 100 percent Having your MyISAM table indexes stored in the key buffer is going to provide for much faster updating than having the indexes stored on disk If this value ... detailed information Overall the mysqlreport program provides very good information about the activity of your server You can use it to provide a profile of your operational servers and see potential...
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Tài liệu MySQL Administrator’s Bible- P14 docx
... USAGE privilege at the global level Table 20-2 lists the various privileges available TABLE 20-2 Privilege and Privilege Levels Privilege Allows Global Db Table Column Routine ALL All privileges ... any graph ■ View/edit raw data ■ Screenshots of cacti are available at www.cacti.net/screenshots.php ■ Virtual appliances for VMWare, Parallels, Qemu, KVM, VirtualIron and Microsoft Virtual PC ... reporting of data gathered ■ Servers can be easily grouped ■ View many graphs at once ■ View multiple servers on a graph ■ View multiple services on a graph ■ Customizable graph type (line, area,...
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Tài liệu MySQL Administrator’s Bible- P16 doc
... our system view On line 22, TABLE *table is set as the handler to the instantiation of our system view We initialize the char *str on line 23 with the string we will store in our system view This ... application is up and running for much of the time Not all architectures that provide scaling will provide high availability, and vice versa A simple way to scale is to upgrade your hardware to a configuration ... SAN to provide read scalability MySQL Proxy or Linux-HA Heartbeat can be used with a SAN for automated failover DRBD DRBD stands for ‘‘distributed replicated block device.’’ A block device is what...
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Tài liệu MySQL Administrator''''s Bible- P8 doc
... statements in view definitions ■ Using views to limit field and row data for security purposes ■ How views can simplify and abstract queries ■ Performance implications of views ■ Using views as check ... tables using an updatable view ■ Reasons a view may not be updatable ■ Logical errors that may occur when updating data using an updatable view ■ How replication handles views 318 Please purchase ... only be applied to views matching the pattern — even if the view references a matching table name Summary In this chapter, we have described: ■ How to create, change, and drop views ■ Invalid SELECT...
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Tài liệu MySQL Administrator''''s Bible- P9 doc
... put the individual MyISAM tables on different hard drives to help increase performance Also, you can query individual MyISAM tables as well as the Merge table This can sometimes provide a tremendous ... InnoDB provides some scalability on up to eight CPU cores and 64 gigabytes of RAM It supports a high level of concurrent writes and is heavily used in typical online transactional environments ... in some cases ■ Table-level features — MySQL provides a handler for tables to have a CHECKSUM attribute, which can be seen in the TABLES system view in the INFORMATION_SCHEMA database Whether...
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Tài liệu MySQL Administrator''''s Bible- P10 doc
... total visitor count and a quarter of a second to return the results from the visitor count cache table If there are 100 visitors to a site in 30 minutes, it would take seconds per visitor * 100 visitors ... The visitors_today table holds the current count of visitors so far today (in 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 ... total visitor count for a time period in the past and then adding the count of visitors since the last calculation For example, at midnight daily, calculate the total visitor count for the previous...
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mysql administrators bible
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