Difference between revisions of "SQL"

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(Common MySQL queries: Reset or set a page hit counter)
m (Common MySQL queries)
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== Common MySQL queries ==
 
== Common MySQL queries ==
;Insert into interwiki
+
=== Insert into interwiki ===
:<sql>INSERT INTO interwiki (iw_prefix,iw_url,iw_local) VALUES('example','http://www.example.org/$1',0);</sql>
+
INSERT INTO interwiki (iw_prefix,iw_url,iw_local) VALUES('example','http://www.example.org/$1',0);
  
;Backup and compress DB & FS
+
=== Backup and compress DB & FS ===
 
:<bash>mysqldump awg -u db --password='password' | 7za a -si backupfile.sql.7z</bash>
 
:<bash>mysqldump awg -u db --password='password' | 7za a -si backupfile.sql.7z</bash>
 
:<bash>tar cf - directory | 7za a -si backupfile.t7z</bash>
 
:<bash>tar cf - directory | 7za a -si backupfile.t7z</bash>
  
;Reset a password
+
=== Reset a password ===
:<sql>UPDATE user SET user_password=md5(CONCAT('184-',md5('password'))) WHERE user_id=184;</sql>
+
UPDATE user SET user_password=md5(CONCAT('184-',md5('password'))) WHERE user_id=184;
  
;Reset or set a page hit counter
+
=== Reset or set a page hit counter ===
:<sql>update page set page_counter=0 where page_title='Main_Page';</sql>
+
update page set page_counter=0 where page_title='Main_Page';
  
 
== Some SQL queries executable by admin (need fixing to work in new MW1.9.3 environment) ==
 
== Some SQL queries executable by admin (need fixing to work in new MW1.9.3 environment) ==

Revision as of 19:29, 10 February 2008

SQL (Structured Query Language) is a computer language used to create, retrieve, update and delete data from relational database management systems. SQL has been standardised by both ANSI and ISO.

SQL is commonly spoken either as the names of the letters ess-cue-el, or like the word sequel. The official pronunciation of SQL according to ANSI is ess-cue-el. However, each of the major database products (or projects) containing the letters SQL has its own convention: MySQL is officially and commonly pronounced "My Ess Cue El"; PostgreSQL is expediently pronounced postgres (being the name of the predecessor to PostgreSQL); and Microsoft SQL Server is commonly spoken as Microsoft-sequel-server.

Common MySQL queries

Insert into interwiki

INSERT INTO interwiki (iw_prefix,iw_url,iw_local) VALUES('example','http://www.example.org/$1',0);

Backup and compress DB & FS

<bash>mysqldump awg -u db --password='password' | 7za a -si backupfile.sql.7z</bash>
<bash>tar cf - directory | 7za a -si backupfile.t7z</bash>

Reset a password

UPDATE user SET user_password=md5(CONCAT('184-',md5('password'))) WHERE user_id=184;

Reset or set a page hit counter

update page set page_counter=0 where page_title='Main_Page';

Some SQL queries executable by admin (need fixing to work in new MW1.9.3 environment)

Documentation

MySQL vs MSSQL

MySQL News & Information

Towards SQL for P2P environments