Basic MySQL Tutorial

by Agas
Read time: 38 minutes
Basic MySQL Tutorial

This basic MySQL tutorial 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 are already familiar with other relational database management systems such as PostgreSQL, Oracle, and Microsoft SQL Server.  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.

Section 2. Querying data

This section helps you learn how to query data from the MySQL database server. We will start with a simple SELECT statement that allows you to query data from a single table.

  • SELECT – show you how to use simple SELECT statement to query the data from a single table.
  • SELECT  DISTINCT  – learn how to use the DISTINCT operator in the SELECT statement to eliminate duplicate rows in a result set.

Section 3. Filtering data

  • WHERE – learn how to use the WHERE clause to filter rows based on specified conditions.
  • AND – introduce you to the AND operator to combine Boolean expressions to form a complex condition for filtering data.
  • OR– introduce you to the OR operator and show you how to combine the OR operator with the ANDoperator to filter data.
  • IN – show you how to use the IN operator in the WHERE clause to 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 BETWEEN operator.
  • LIKE  – provide you with technique to query data based on a specific pattern.
  • LIMIT – use LIMIT to constrain the number of rows returned by SELECT statement
  • IS NULL – test whether a value is NULL or not by using IS NULL operator.

Section 4. Sorting data

  • ORDER BY – show you how to sort the result set using ORDER BY clause. The custom sort order with the FIELD function will be also covered.
  • Natural sorting using ORDER BY clause – walk you through various natural sorting techniques in MySQL by using the ORDER BY 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 – show you how to group rows into groups based on columns or expressions.
  • HAVING – filter the groups by a specific condition.
  • ROLLUP –  generate multiple grouping sets considering a hierarchy between columns specified in the GROUP BY clause.

 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 INTERSECT operator in MySQL.
  • 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 – use various forms of the INSERT statement to insert data into a table.
  • INSERT INTO SELECT – insert data into a table from the result set of a query.
  • INSERT IGNORE  – explain you the INSERT IGNORE statement that inserts rows into a table and ignore rows that cause errors.
  • UPDATE – learn how to use UPDATE statement and its options to update data in database tables.
  • UPDATE JOIN – show you how to perform cross table update using UPDATE JOIN statement with INNER JOIN and LEFT JOIN.
  • DELETE – show you how to use the DELETE statement to remove data from one or more tables.
  • ON DELETE CASCADE – learn how to use ON DELETE CASCADE referential 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 COMMIT and ROLLBACK to 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.

  • Selecting a MySQL database – show you how to use the USE statement to select a MySQL database via the mysql program and MySQL Workbench.
  • Managing databases – 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.
  • CREATE DATABASE – show you how to create a new database in MySQL Server.
  • DROP DATABASE – learn how to delete an existing database.
  • MySQL storage engines– it is essential to understand the features of each storage engine 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 CREATE TABLE 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 ALTER TABLE statement to change existing table’s structure.
  • Renaming table –  show you how to rename a table using RENAME TABLE statement.
  • Removing a column from a table – show you how to use the ALTER TABLE DROP COLUMN statement to 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 ALTER TABLE ADD COLUMN statement.
  • DROP TABLE – show you how to remove existing tables using DROP TABLE statement.
  • MySQL temporary table – discuss MySQL temporary table and show you how to manage temporary tables.
  • TRUNCATE TABLE – show you how to use the TRUNCATE TABLE statement to delete all data in a table fast.

Section 12. 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 ZEROFILL and display width attributes of the integer column.
  • DECIMAL – show you how to use DECIMAL data type to store exact values in decimal format.
  • BIT – introduce you BIT data type and how to store bit values in MySQL.
  • BOOLEAN – explain to you how MySQL handles Boolean values by using TINYINT(1) internally.
  • CHAR – guide to CHAR data type for storing the fixed-length string.
  • VARCHAR – give you the essential guide to VARCHAR data type.
  • TEXT – show you how to store text data using TEXT data type.
  • DATE – introduce you to the DATE data type and show you some date functions to handle the date data effectively.
  • TIME – walk you through the features of TIME data type and show you how to use some useful temporal functions to handle time data.
  • DATETIME – introduce you to the DATETIME data type and some useful functions to manipulate DATETIME values.
  • TIMESTAMP – introduce you to TIMESTAMP and 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 ENUM data type correctly to store enumeration values.

Section 13. MySQL constraints

  • NOT NULL constraint – introduce you to the NOT NULL constraint and show you how to define a  NOT NULL constraint for a column or add the NOT NULL constraint to 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 UNIQUE constraint to 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 CHECK constraint in MySQL.

Section 14. 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 15. MySQL import & export