This Document explains some of the basic SQL statements. If this is the first time you have used a relational database management system, this tutorial gives you everything you need to know to work with MySQL such as querying data, updating data, managing databases, and creating tables.
If you’re already familiar with other relational database management systems such as PostgreSQL, Oracle, or Microsoft SQL Server, etc., you can use this tutorial to refresh your knowledge and understand how SQL dialect of MySQL is different from other systems.
Section 1. Getting started with MySQL
This section helps you get started with MySQL. We will start installing MySQL, downloading a sample database, and loading data into the MySQL server for practicing.
- Installing MySQL database server – show you step by step how to install MySQL database server on your computer.
- Downloading MySQL sample database – introduce you to a MySQL sample database named.
classicmodelsWe also provide you links for downloading the sample database and its diagrams.
- Loading the sample database into your own MySQL database server – walk you through steps of how to load the sample
classicmodelsdatabase into your MySQL database server for practicing.
Section 2. Querying data
This section helps you learn how to query data from the MySQL database server. We will start with a simple statement
SELECT that allows you to query data from a single table.
- SELECT – show you how to use a simple
SELECTstatement to query the data from a single table.
- SELECT DISTINCT – learn how to use the operator
DISTINCTin the statement
SELECTto eliminate duplicate rows in a result set.
Section 3. Filtering data
- WHERE – learn how to use the clause
WHEREto filter rows based on specified conditions.
- AND – introduce you to the operator
ANDto combine Boolean expressions to form a complex condition for filtering data.
- OR– introduce you to the operator
ORand show you how to combine the operator
ORwith the operator
ANDto filter data.
- IN – show you how to use the operator
INin the clause
WHEREto determine if a value matches any value in a list or a subquery.
- BETWEEN – show you how to query data based on a range using operator
- LIKE – provide you with technique to query data based on a specific pattern.
- LIMIT – use
LIMITto constrain the number of rows returned by
- IS NULL – test whether a value is or
NULLnot by using operator
Section 4. Sorting data
- ORDER BY – show you how to sort the result set using clause
ORDER BY. The custom sort order with the function
FIELDwill be also covered.
- Natural sorting using ORDER BY clause – walk you through various natural sorting techniques in MySQL by using the clause
Section 5. Joining tables
- MySQL alias – introduce you to table alias and aliases to improve the readability of complex queries.
- MySQL Join – give you an overview of joins supported in MySQL including cross join, inner join, left join, and right join.
- INNER JOIN – use inner join clause to query data from multiple related tables.
- LEFT JOIN – learn how to apply left join clause in various contexts.
- RIGHT JOIN – show you how to use right join to query data from two or more tables.
- CROSS JOIN – make a Cartesian product of rows from multiple tables.
- Self-join – joins a table to itself using table alias, and connects rows within the same table using other kinds of joins including inner join and left join.
Section 6. Grouping data
- GROUP BY clause – show you how to group rows into groups based on columns or expressions.
- HAVING – filter the groups by a specific condition.
Section 7. MySQL subquery, derived table, and CTE
- MySQL subquery – show you how to nest a query (inner query) within another query (outer query) and use the result of the inner query for the outer query.
- MySQL derived table – introduce you the derived table concept and show you how to use it to simplify complex queries.
- MySQL CTE – explain you the common table expression concept and show you how to use CTE for querying data from tables.
- Recursive CTE – guide you how to use the recursive CTE to traverse the hierarchical data.
Section 8. Using Set operators
- UNION and UNION ALL – combine two or more result sets of multiple queries into a single result set.
- INTERSECT – show you a couple of ways to simulate the operator
- MINUS – explain to you the SQL MINUS operator and show you how to simulate it in MySQL.
Section 9. Modifying data in MySQL
In this section, you will learn how to insert, update, and delete data from tables using various MySQL statements.
- INSERT – learn how to use various forms of the statement
INSERTto insert data into database tables.
- INSERT IGNORE – explain you the statement
INSERT IGNOREthat inserts rows into a table and ignore rows that cause errors or exceptions.
- UPDATE – learn how to use statement
UPDATEand its options to update data in database tables.
- UPDATE JOIN – show you how to perform cross table update using statement
UPDATE JOINwith and
- DELETE – show you how to use the statement
DELETEto remove data from one or more tables.
- ON DELETE CASCADE – learn how to use
ON DELETE CASCADEreferential action for a foreign key to delete data from a child table automatically when you delete data from a parent table.
- DELETE JOIN – show you how to delete data from multiple tables.
- REPLACE – learn how to insert or update data depends on whether data exists in the table or not.
- Prepared Statement – show you how to use the prepared statement to execute a query.
Section 10. MySQL transaction
- MySQL transaction – learn about MySQL transactions, and how to use
ROLLBACKto manage transactions in MySQL.
- MySQL table locking – learn how to use MySQL locking for cooperating table access between sessions.
Section 11. Managing MySQL databases and tables
This section shows you how to manage the most important database objects in MySQL including database and tables.
- Managing database in MySQL – you will learn various statements to manage MySQL databases including creating a new database, removing an existing database, selecting a database, and listing all databases.
- Understanding MySQL Table Types – it is essential to understand the features of each table type so that you can use them effectively to maximize the performance of your databases.
- CREATE TABLE – show you how to create new tables in a database using statement
- MySQL sequence – show you how to use a sequence to generate unique numbers automatically for the primary key column of a table.
- ALTER TABLE – learn how to use the statement
ALTER TABLEto change existing table’s structure.
- Renaming table – show you how to rename a table using statement
- Removing a column from a table – show you how to use the statement
ALTER TABLE DROP COLUMNto remove one or more columns from a table.
- Adding a new column to a table – show you how to add one or more columns to an existing table using statement
ALTER TABLE ADD COLUMN.
- DROP TABLE – show you how to remove existing tables using statement
- MySQL temporary table – discuss MySQL temporary table and show you how to manage temporary tables.
- TRUNCATE TABLE – show you how to use the statement
TRUNCATE TABLEto delete all data in a table fast.
Section 12. MySQL indexes
- Managing MySQL database indexes – learn how to work with MySQL indexes and how to take advantages of indexes to speed up the data retrieval.
- UNIQUE index – show you how to use the index
UNIQUEto enforce the uniqueness of value in one or more columns.
Section 13. MySQL data types
- MySQL data types – show you various data types in MySQL so that you can apply them effectively in designing database tables.
- INT – show you how to use integer data type. We also show you how to use
ZEROFILLand display width attributes of the integer column.
- DECIMAL – show you how to use
DECIMALdata type to store exact values in decimal format.
- BIT – introduce you
BITdata type and how to store bit values in MySQL.
- BOOLEAN – explain to you how MySQL handles Boolean values by using
- CHAR – guide to
CHARdata type for storing the fixed-length string.
- VARCHAR – give you the essential guide to
- TEXT – show you how to store text data using
- DATE – introduce you to the
DATEdata type and show you some date functions to handle the date data effectively.
- TIME – walk you through the features of
TIMEdata type and show you how to use some useful temporal functions to handle time data.
- DATETIME – introduce you to the
DATETIMEdata type and some useful functions to manipulate values
- TIMESTAMP – introduce you to
TIMESTAMPand its features called automatic initialization and automatic update that allows you to define auto-initialized and auto-updated columns for a table.
- JSON – show you how to use JSON data type to store JSON documents.
- ENUM – learn how to use
ENUMdata type correctly to store enumeration values.
Section 14. MySQL constraints
- NOT NULL constraint – introduce you to the constraint
NOT NULLand show you how to define a
NOT NULLconstraint for a column or add the constraint
NOT NULLto an existing column.
- Primary key constraint – guide you how to use primary key constraint to create the primary key for a table.
- Foreign key constraint – introduce you to the foreign key and show you step by step how to create and drop foreign keys.
- UNIQUE constraint – show you how to use constraint
UNIQUEto enforce the uniqueness of values in a column or a group of columns in a table.
- CHECK constraint emulation – walk you through various ways to emulate the constraint
Section 15. MySQL globalization
- MySQL character Set – discuss MySQL character set and show you step by step how to perform various operations on character sets.
- MySQL collation – discuss MySQL collation and show you how to set character set and collations for the MySQL server, database, tables, and columns.
Section 16. MySQL import & export
- Import CSV File Into MySQL Table – show you how to use
LOAD DATA INFILEstatement to import CSV file into a MySQL table.
- MySQL Export Table to CSV – learn various techniques of how to export MySQL table to a CSV file format.
Source: Basic MySQL Tutorial