README.md

Mysql Cheat Sheet

Data Definition Language (DDL)

Command	Description
CREATE DATABASE	Creates a new database
ALTER DATABASE	Modifies a database
DROP DATABASE	Deletes a database
CREATE TABLE	Creates a new table
ALTER TABLE	Modifies a table structure
DROP TABLE	Deletes a table
CREATE INDEX	Creates an index on a table
DROP INDEX	Deletes an index from a table

Data Manipulation Language (DML)

Command	Description
SELECT	Retrieves data from one or more tables
INSERT INTO	Inserts new records into a table
UPDATE	Modifies existing records in a table
DELETE FROM	Deletes records from a table

Data Control Language (DCL)

Command	Description
GRANT	Grants privileges to a user
REVOKE	Revokes privileges from a user

Transaction Control Language (TCL)

Command	Description
COMMIT	Saves the changes made in a transaction
ROLLBACK	Reverts the changes made in a transaction
SAVEPOINT	Sets a savepoint within a transaction
RELEASE SAVEPOINT	Removes a savepoint within a transaction

Data Query Language (DQL)

Command	Description
WHERE	Filters records based on a condition
GROUP BY	Groups rows based on a column
HAVING	Filters groups based on a condition
ORDER BY	Sorts the result set
JOIN	Combines rows from two or more tables based on a related column
UNION	Combines the result sets of two or more SELECT statements
LIMIT	Limits the number of rows returned in a result set
DISTINCT	Returns unique values in a column
AVG	Calculates the average value of a column
SUM	Calculates the sum of values in a column
COUNT	Counts the number of rows or non-null values in a column
MAX	Returns the maximum value in a column
MIN	Returns the minimum value in a column
IN	Checks if a value matches any value in a list
NOT IN	Checks if a value does not match any value in a list
BETWEEN	Checks if a value is within a range
LIKE	Searches for a specified pattern in a column
IS NULL	Checks if a value is NULL
IS NOT NULL	Checks if a value is not NULL

Data Modification Language (DML)

Command	Description
TRUNCATE TABLE	Deletes all records from a table
DEFAULT	Sets a default value for a column
SET	Assigns a value to a variable
INSERT INTO SELECT	Inserts data from one table into another
REPLACE INTO	Inserts a new record or replaces an existing record
DELETE JOIN	Deletes rows from multiple tables
UPDATE JOIN	Updates rows in one table based on another table

Database Administration Commands

Command	Description
SHOW DATABASES	Lists all databases
SHOW TABLES	Lists all tables in a database
SHOW COLUMNS	Lists all columns in a table
SHOW INDEXES	Lists all indexes in a table
SHOW CREATE TABLE	Displays the CREATE TABLE statement for a table
SHOW GRANTS	Displays the privileges granted to a user
SHOW PROCESSLIST	Lists the active database connections
SHOW STATUS	Provides various status information about the server
SHOW VARIABLES	Lists the server configuration variables
SHOW TABLE STATUS	Displays information about tables in a database
SHOW TRIGGERS	Lists all triggers in a database
SHOW EVENTS	Lists all scheduled events in a database
SHOW FUNCTION STATUS	Displays information about user-defined functions
SHOW PROCEDURE STATUS	Displays information about stored procedures
SHOW CHARACTER SET	Lists all character sets supported by the server
SHOW COLLATION	Lists all collations supported by the server
SHOW CREATE DATABASE	Displays the CREATE DATABASE statement for a database
SHOW CREATE FUNCTION	Displays the CREATE FUNCTION statement for a function
SHOW CREATE PROCEDURE	Displays the CREATE PROCEDURE statement for a procedure
SHOW CREATE TRIGGER	Displays the CREATE TRIGGER statement for a trigger
SHOW CREATE EVENT	Displays the CREATE EVENT statement for an event
SHOW CREATE VIEW	Displays the CREATE VIEW statement for a view
SHOW CREATE USER	Displays the CREATE USER statement for a user
SHOW GRANTS FOR	Displays the privileges granted to a specific user
SHOW PRIVILEGES	Lists the available privileges
SHOW STORAGE ENGINES	Lists the available storage engines
SHOW ENGINE	Provides information about a specific storage engine
SHOW WARNINGS	Lists the most recent warnings
SHOW ERRORS	Lists the most recent errors
SHOW BINLOG EVENTS	Displays events from the binary log
SHOW MASTER STATUS	Provides information about the binary log
SHOW SLAVE STATUS	Provides information about the replication slave

Backup and Restore Commands

Command	Description
mysqldump	Exports the database or selected tables to a backup file
mysql	Restores a database or backup file into the server

User and Privilege Management Commands

Command	Description
CREATE USER	Creates a new user account
DROP USER	Deletes a user account
ALTER USER	Modifies a user account
SET PASSWORD	Sets or changes the password for a user
GRANT	Grants privileges to a user
REVOKE	Revokes privileges from a user
FLUSH PRIVILEGES	Reloads the privilege tables

Table Maintenance Commands

Command	Description
ANALYZE TABLE	Analyzes and stores index statistics for a table
OPTIMIZE TABLE	Reorganizes table storage to reclaim unused space
REPAIR TABLE	Repairs a corrupted table

Index Management Commands

Command	Description
CREATE INDEX	Creates an index on a table
ALTER TABLE ... ADD INDEX	Adds an index to an existing table
ALTER TABLE ... DROP INDEX	Removes an index from a table

View Management Commands

Command	Description
CREATE VIEW	Creates a virtual table based on the result of a query
ALTER VIEW	Modifies the definition of a view
DROP VIEW	Deletes a view

Stored Procedures and Functions Commands

Command	Description
CREATE PROCEDURE	Creates a stored procedure
ALTER PROCEDURE	Modifies a stored procedure
DROP PROCEDURE	Deletes a stored procedure
CREATE FUNCTION	Creates a user-defined function
ALTER FUNCTION	Modifies a user-defined function
DROP FUNCTION	Deletes a user-defined function

Event Management Commands

Command	Description
CREATE EVENT	Creates a scheduled event
ALTER EVENT	Modifies a scheduled event
DROP EVENT	Deletes a scheduled event
EVENT SCHEDULER	Starts or stops the event scheduler

Apologies for the inconvenience. Here are additional MySQL commands:

Database Connection and Management Commands

Command	Description
USE	Specifies the database to be used
SHOW DATABASES	Lists all databases
CREATE DATABASE	Creates a new database
ALTER DATABASE	Modifies a database
DROP DATABASE	Deletes a database

Table and Column Management Commands

Command	Description
SHOW TABLES	Lists all tables in a database
CREATE TABLE	Creates a new table
ALTER TABLE	Modifies a table structure
DROP TABLE	Deletes a table
TRUNCATE TABLE	Deletes all records from a table
ADD COLUMN	Adds a new column to an existing table
MODIFY COLUMN	Modifies the properties of a column
DROP COLUMN	Deletes a column from a table
RENAME TABLE	Renames a table

Data Retrieval Commands

Command	Description
SELECT	Retrieves data from one or more tables
WHERE	Filters records based on a condition
GROUP BY	Groups rows based on a column
HAVING	Filters groups based on a condition
ORDER BY	Sorts the result set
LIMIT	Limits the number of rows returned in a result set
JOIN	Combines rows from two or more tables based on a related column
UNION	Combines the result sets of two or more SELECT statements
DISTINCT	Returns unique values in a column
IN	Checks if a value matches any value in a list
BETWEEN	Checks if a value is within a range
LIKE	Searches for a specified pattern in a column
IS NULL	Checks if a value is NULL
IS NOT NULL	Checks if a value is not NULL

Data Manipulation Commands

Command	Description
INSERT INTO	Inserts new records into a table
UPDATE	Modifies existing records in a table
DELETE FROM	Deletes records from a table

Aggregate Functions

Command	Description
AVG	Calculates the average value of a column
SUM	Calculates the sum of values in a column
COUNT	Counts the number of rows or non-null values in a column
MAX	Returns the maximum value in a column
MIN	Returns the minimum value in a column

Miscellaneous Commands

Command	Description
DESCRIBE	Provides information about the columns in a table
SHOW INDEX	Lists the indexes in a table
SHOW CREATE TABLE	Displays the CREATE TABLE statement for a table
SET	Assigns a value to a variable
DELIMITER	Changes the delimiter used in stored procedures
COMMIT	Saves the changes made in a transaction
ROLLBACK	Reverts the changes made in a transaction

Please note that this is not an exhaustive list of all MySQL commands, but it covers many commonly used ones. It's recommended to consult the official MySQL documentation for more details and specific use cases.