Mysql: Difference between revisions
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<syntaxhighlight lang="mysql"> | <syntaxhighlight lang="mysql"> | ||
SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable; | SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable; | ||
</syntaxhighlight> | |||
===== Joint ===== | |||
<syntaxhighlight lang="mysql"> | |||
SELECT m.MenuName, o.MenuOption FROM `menuoption` o left outer join `menu` m on o.MenuId=m.id; | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 17:39, 20 November 2014
Syntax
Data Manipulation
Basic
- Select
SELECT columna, columnb FROM mytable;
SELECT columna as alias1, columnb as alias2 FROM mytable;
Special
- Dummy Table
SELECT 1+1;
SELECT 1+1 FROM DUAL;
- Concatenate
SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable;
Joint
SELECT m.MenuName, o.MenuOption FROM `menuoption` o left outer join `menu` m on o.MenuId=m.id;
Data Definition
Basic
Create Database
CREATE DATABASE mydatabase;
CREATE DATABASE mydatabase CHARACTER SET utf8 COLLATE utf8_general_ci;
Create User
GRANT ALL PRIVILEGES ON mydatabase.* TO myuser@localhost IDENTIFIED BY 'myuser_password';
Create Table
Alter Table
Special Case
TimeStampe
CREATE TABLE test_table(
Id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
CreatedTime TIMESTAMP DEFAULT '0000-00-00 00:00:00',
UpdatedTime TIMESTAMP DEFAULT NOW() ON UPDATE NOW()
);