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Getting started:

Related tutorials:



Access monitor: 
> mysql -u [username] -p; (will prompt for password)

Show all databases: 
> show databases;

Access database: 
> mysql -u [username] -p [database] (will prompt for password)

Create new database: 
> create database [database];

Select database: 
> use [database];

Determine what database is in use: 
> select database();

Show all tables: 
> show tables;

Show table structure: 
> describe [table];

List all indexes on a table: 
> show index from [table];

Create new table with columns: 
> CREATE TABLE [table] ([column] VARCHAR(120), [another-column] DATETIME);

Adding a column: 
> ALTER TABLE [table] ADD COLUMN [column] VARCHAR(120);

Adding a column with an unique, auto-incrementing ID: 

Inserting a record: 
> INSERT INTO [table] ([column], [column]) VALUES ('[value]', [value]');

MySQL function for datetime input: 
> NOW()

Selecting records: 
> SELECT * FROM [table];

Explain records: 

Selecting parts of records: 
> SELECT [column], [another-column] FROM [table];

Counting records: 
> SELECT COUNT([column]) FROM [table];

Counting and selecting grouped records: 
> SELECT *, (SELECT COUNT([column]) FROM [table]) AS count FROM [table] GROUP BY [column];

Selecting specific records:  
> SELECT * FROM [table] WHERE [column] = [value]; (Selectors: <, >, !=; combine multiple selectors with AND, OR)

Select records containing [value]: 
> SELECT * FROM [table] WHERE [column] LIKE '%[value]%';

Select records starting with [value]: 
> SELECT * FROM [table] WHERE [column] LIKE '[value]%';

Select records starting with val and ending with ue: 
> SELECT * FROM [table] WHERE [column] LIKE '[val_ue]';

Select a range: 
> SELECT * FROM [table] WHERE [column] BETWEEN [value1] and [value2];

Select with custom order and only limit: > SELECT * FROM [table] WHERE [column] ORDER BY [column] ASC LIMIT [value]; (Order: DESC, ASC)

Updating records: 
> UPDATE [table] SET [column] = '[updated-value]' WHERE [column] = [value];

Deleting records: 
> DELETE FROM [table] WHERE [column] = [value];

Delete all records from a table (without dropping the table itself): 
> DELETE FROM [table]; (This also resets the incrementing counter for auto generated columns like an id column.)

Delete all records in a table: 
> Truncate table [table];

Removing table columns: 
> ALTER TABLE [table] DROP COLUMN [column];

Deleting tables: DROP TABLE [table];

Deleting databases: DROP DATABASE [database];

Custom column output names: SELECT [column] AS [custom-column] FROM [table];

Export a database dump (more info here): mysqldump -u [username] -p [database] > db_backup.sql

Use --lock-tables=false option for locked tables (more info here).

Import a database dump (more info here): mysql -u [username] -p -h localhost [database] < db_backup.sql

Logout: exit;

Aggregate functions

Aggregate functions
Select but without duplicates: 
SELECT distinct name, email, acception FROM owners WHERE acception = 1 AND date >= 2015-01-01 00:00:00

Calculate total number of records: SELECT SUM([column]) FROM [table];

Count total number of [column] and group by [category-column]: 
SELECT [category-column], SUM([column]) FROM [table] GROUP BY [category-column];

Get largest value in [column]: 
SELECT MAX([column]) FROM [table];

Get smallest value: 
SELECT MIN([column]) FROM [table];

Get average value: 
SELECT AVG([column]) FROM [table];

Get rounded average value and group by [category-column]: 
SELECT [category-column], ROUND(AVG([column]), 2) FROM [table] GROUP BY [category-column];

Multiple tables

Multiple tables
Select from multiple tables: 
SELECT [table1].[column], [table1].[another-column], [table2].[column] FROM [table1], [table2];

Combine rows from different tables: 
SELECT * FROM [table1] INNER JOIN [table2] ON [table1].[column] = [table2].[column];

Combine rows from different tables but do not require the join condition: 
SELECT * FROM [table1] LEFT OUTER JOIN [table2] ON [table1].[column] = [table2].[column]; (The left table is the first table that appears in the statement.)

Rename column or table using an alias: 

SELECT [table1].[column] AS '[value]', [table2].[column] AS '[value]' FROM [table1], [table2];

Users functions

Users functions
List all users: 
> SELECT User,Host FROM mysql.user;

Create new user: 
> CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';

Grant ALL access to user for * tables: 
> GRANT ALL ON database.* TO 'user'@'localhost';

Find out the IP Address of the Mysql Host

> SHOW VARIABLES WHERE Variable_name = 'hostname'; 

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