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Reference


MySQL Admin Commands:

 

 


Sample SQL:

SQL requests are either administrative or data-related. The following are sample SQL segments and are not necessarily pertinent to the previous example:

mysql> CREATE DATABASE bedrock;
mysql> USE bedrock;
mysql> SHOW tables;
mysql> SHOW DATABASES;
mysql> LOAD DATA LOCAL INFILE "data.txt" INTO TABLE bedrock;
mysql> SELECT DISTINCT dept FROM  bedrock;
mysql> CREATE TABLE pet (name VARCHAR(20), owner VARCHAR(20), species VARCHAR(20), sex CHAR(1), birth DATE, death DATE);
mysql> SELECT * FROM pet WHERE species = "snake" OR species = "bird";
mysql> SELECT * FROM pet WHERE species = "dog" AND sex = "f";
mysql> SELECT * FROM pet WHERE birth >= "1998-1-1";
mysql> SELECT name, birth FROM pet ORDER BY birth DESC;
mysql> SELECT * FROM pet WHERE name LIKE "b%";
mysql> SELECT * FROM pet WHERE name REGEXP "^b";
mysql> SELECT species, COUNT(*) FROM pet GROUP BY species;
mysql> SELECT MAX(article) AS article FROM shop;
mysql> DROP TABLE tmp;
mysql> CREATE TABLE retired_employee (
                    Name char(20) DEFAULT '' NOT NULL,
                    Dept char(10) DEFAULT '' NOT NULL,
                    JobTitle char(20),
                    UNIQUE name_dept (Name,Dept)
                    );
mysql> CREATE UNIQUE index name_dept on employee (name,dept); - avoids duplicate keys
mysql> INSERT INTO employee VALUES ("Jane Smith","Sales","Customer Rep");
mysql> INSERT INTO employee VALUES ('Jane Smith','Sales','Account Manager');
mysql> INSERT INTO employee VALUES ('Jane Smith','Engineerin','Manager');
mysql> UPDATE employee SET dept='HR' WHERE name='Jane Smith';

Use "auto_increment" integer column:
   mysql> ALTER TABLE employee ADD EmpId INT NOT NULL AUTO_INCREMENT PRIMARY KEY; 

mysql> SHOW INDEX FROM employee;
mysql> ALTER TABLE employee DROP INDEX name_dept;  - get rid of 
mysql> SELECT VERSION();
mysql> SELECT NOW();
mysql> SELECT USER();
mysql> SELECT * FROM employee WHERE name LIKE "%Sm%";
mysql> SELECT * FROM employee WHERE name REGEXP "^Ja";
mysql> 
See section 3 of MySQL manual for more examples.

 


Loading Data:

Command: LOAD DATA LOCAL INFILE 'file.dat' INTO TABLE employer;

Input tab delimited file: file.dat

Fred Flinstone  Quarry Worker   Rock Digger
Wilma Flinstone Finance Analyst 
Barney Rubble   Sales   Neighbor
Betty Rubble    IT      Neighbor

 


Dump/Backup/Transfer Database:

The mysqldump command will read the mySQL database and generate a SQL command text file. This allows data to be migrated to other versions of mySQL (i.e. upgrade from typical Red Hat (RH7.x to FC3) mySQL release 3.23.58 to a more advanced mySQL 4.1 or 5.0) or to other SQL databases. SQL command file generated can create tables, insert data, ....

 

Option Description
-A
--all-databases
Dump all the databases.
-B
--databases
Dump the specified databases.
-h
--host=
Specify host to connect to.
-p
--password=
Specify password. If you do not specify a password, then you will be queried.
-u
--user=
Specify user. Defaults to current user logged in.
--opt Same as: --add-drop-table --add-locks --all --extended-insert --quick --lock-tables
--add-drop-table Add a "drop table" SQL statement before each "create" SQL statement.
--add-locks Add "lock" SQL statements around "insert" SQL statements.
-a
--all
Include all mySQL specific SQL "create" options.
-e
--extended-insert
Allows utilization of the new, much faster INSERT syntax. Database you are migrating to must support this notation.
-q
--quick
Donít buffer query, dump directly to stdout.
-l
--lock-tables
Lock all tables for read.
-?
--help
Display command line options.

Examples:

Man Page:

Upgrading to 4.1:

 


Building MySql from source: (on Linux)

Prerequisites:

Compile and install: (as root) Configure:

 


Commands/Man pages:

 

  • isamchk - Check and repair of ISAM tables.
  • isamlog - Write info about whats in a nisam log file.
  • msql2mysql
  • my_print_defaults
  • myisamchk
  • myisamlog
  • myisampack
  • mysql - text-based client for mysqld, a SQL-based relational database daemon
  • mysql_config
  • mysql_convert_table_format
  • mysql_find_rows
  • mysql_fix_privilege_tables
  • mysql_install_db
  • mysql_setpermission
  • mysql_zap - a perl script used to kill processes
  • mysqlaccess - Create new users to mysql.
  • mysqlbinlog
  • mysqlbug
  • mysqlcheck
  • mysqld_multi - Used for managing several mysqld processes running in different UNIX sockets and TCP/IP ports.
  • mysqldump - text-based client for dumping or backing up mysql databases , tables and or data.
  • mysqldumpslow
  • mysqlhotcopy
  • mysqlimport
  • mysqlshow - Shows the structure of a mysql database (databases,tables and columns)
  • mysqltest
  • pack_isam
  • perror - used to display a description for a system error code, or an MyISAM/ISAM table handler error code.
  • replace - A utility program to replace changes strings in place in files or on the standard input.
  • resolve_stack_dump
  • resolveip
Server:
  • mysqladmin - A utility for performing administrative operations
  • safe_mysqld - The recommended way to start a mysqld daemon on Unix.

 


Admin GUI Tools:

 



Etc

Society

Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy

Quotes

War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda  : SE quotes : Language Design and Programming Quotes : Random IT-related quotesSomerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose BierceBernard Shaw : Mark Twain Quotes

Bulletin:

Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

History:

Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

Most popular humor pages:

Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor

The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D


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