SQL–MySQL Complete Master Bootcamp | Beginner-Expert

Picture a database as a house: a unique-named container holds tables as rooms inside a DBMS environment, so create databases before tables and keep table names unique within each database.

Learn to create a database with SQL commands, name it customer orders, then use show databases to verify creation and distinguish between database and table creation.

Use if not exist to create a database without errors, allowing existing databases to exist without error and letting subsequent queries run.

Learn how to switch the active database in SQL by using the use command with the database name, for example use project management, to set the current context.

Determine the currently selected database in MySQL by running select database to see which database you are using, and switch databases with show databases and use <database> as needed.

Learn how to check if a database exists in MySQL using a simple query against information_schema.schemata. Use select schema_name from information_schema.schemata where schema_name = 'database_name' to verify existence.

Learn how to delete a database in MySQL by using drop, verify with show databases, and remove the customer orders database with confidence.

Learn to safely delete a database using drop database if exists to avoid errors and protect subsequent queries from unintended failures.

Explore CRUD—the four essential database operations: create, read, update, and delete. Learn how insert, select, update, and delete commands power persistent storage in MySQL.

Create and structure sql tables by defining columns with data types (integer, varchar, date, boolean), then insert rows into a users table to store and query data.

Explore how the select statement fetches data from a database, choosing specific columns or all columns from a table, using from, where, and computed expressions.

Explore SQL data types and how they define column content, including numeric, string, date, binary, spatial, and JSON types, to improve data integrity and performance.

Explore MySQL numeric data types, including integer variants (int, smallint, tinyint, bigint), fixed point (decimal, numeric), floating point (float, double), and bit, with attention to exact versus approximate values.

Explore integer types in MySQL, including int, tinyint, smallint, mediumint, and bigint, their signed ranges, storage sizes, and the rule to choose the smallest type that fits to save space.

Explore how to select integer data types for a scalable online retail database, from billions of users to thousands of products, using bigint, tinyint, smallint, mediumint, and int in MySQL.

Show how MySQL treats boolean as tinyint(1), using 1 or 0 for true or false, and demonstrate a books table with in_stock and on_sale defaults (1 true, 0 false).

Explore fixed-point types in MySQL with decimal and numeric, emphasizing exact values, precision (M) and scale (D), for financial data and currency calculations.

Explore fixed-point data types in a MySQL financial table by using integer for employee id and decimal for salary and bonus, with create, insert, describe, and show tables operations.

Compare float and double in MySQL, understanding single and double precision, their ranges, and when to use them for approximate values, with guidance to use decimal or numeric for money.

Create and describe a MySQL table, review column types, null and default constraints, insert data, and select results to see how floating point data types are used.

Explore the bit value type in MySQL, using the bit data type to store binary values 0 or 1, and learn to define a bit column with an optional length.

Use bit data types to track up to eight module statuses per server in MySQL, storing on/off states as bits in a server status table.

Explore the MySQL string data types, including char, varchar, binary, var binary, blob, text, enum, and set. Learn when and how to use each type.

Learn char and varchar types in MySQL: char uses fixed-length storage with space padding and truncation; varchar uses variable-length storage up to a defined limit, suitable for names and addresses.

Explore a client scenario to design a MySQL products table using a fixed-length CHAR(5) product_code and variable-length VARCHAR fields for product_name and description (VARCHAR(255)), with create table and insert statements.

Examine binary and varbinary types: binary stores fixed-length strings (1–255 bytes) with padding or truncation; varbinary stores variable-length data up to 65535 bytes with length bytes.

Explore a MySQL table design with user_profiles: user_id as varchar, username as varchar, and password_age as binary(32); insert data and observe password values stored as blob.

Explore blob and text types in MySQL, including tiny, middle, and long variants, and learn when to store binary data versus large text data.

Explore how blob and text types power digital asset management and flexible blog content by creating tables, inserting sample binary data, and using code to read files before database insertion.

Master the enum datatype and the string type in MySQL, storing one of predefined colors, using enum indexes, case sensitivity, and when to apply enum for limited value sets.

Model a student table using an enum grade column in MySQL, implement auto-incremented id, define a primary key, and perform insert and select operations.

Master the set data type in MySQL, which stores multiple predefined values (up to 64, case sensitive, and ordered by addition), and contrast it with enum using practical examples.

Shows how to model a books database for an online bookstore using a set data type to store multiple genres per book, with create table and insert examples.

Identify five date and time data types in MySQL, including date type, time type, and timestamp, and learn to understand and handle them.

Master date and time data types in MySQL, including date type, time type, timestamp, year, time with timezone, and timestamp with time zone.

Create a movie table using date and time data types—datetime for show times, year for release, and timestamp for last updates—with an autoincrement primary key movie and a varchar name.

Explore spatial data types in MySQL, including geometry, point, line string, polygon, multipoint, multiline string, multipolygon, and geometry collection.

Master MySQL spatial data types such as point, linestring, polygon, and their multi variants, and learn to compute distances and check points within polygons for geographic data.

Demonstrate modeling spatial data in MySQL by creating tables for delivery locations, routes, and zones using point, linestring, polygon, and multipoint types, with autoincrement ids and primary keys.

Explore the JSON data type in MySQL, including objects and arrays, learn to store and access JSON documents with a flexible nested structure, and query them using MySQL functions.

Create a MySQL products table with an auto_increment id, product name, and a JSON attributes column to store dynamic attributes like color, size, and brand, and practice insert and describe.

Learn how the MySQL auto increment attribute automatically generates a unique identifier for each new row, commonly used with primary keys, and supports reference integrity via foreign keys.

explains how the default value works in mysql, boosting data entry and consistency, and demonstrates setting defaults via create and alter table with country examples.

Explore how null represents absence of information, distinguish it from zero, and learn how not null constraints enforce required values in MySQL, with primary keys and sample inserts.

Learn how to use the where clause to filter SQL results, selecting from employees by department and age, and prepare for insert operations.

Learn how to create a users table and insert data using basic insert statements, specifying columns and values, then verify results with a select query.

Learn to insert multiple rows at once with insert into users values, adding several rows in a single statement and confirming that three rows were inserted.

Learn to insert data from a table into another using insert into and select, create a temp_users table, and move name and age into users table where username equals Eva.

Learn to insert data with the set clause in SQL by setting username and age in an insert into users set statement, and verify the result.

Explore how keys in SQL identify records and link tables, covering candidate, primary, unique, natural, alternate, composite, super, surrogate, and foreign keys with practical examples.

Learn how unique keys enforce distinct values in single or multiple columns, including null handling, with MySQL examples and how to apply constraints via create or alter table.

Learn how a primary key uniquely identifies records, how to choose a single or composite primary key, and how to define it in SQL using table creation and constraints.

Identify candidate keys and alternate keys in a table, explain primary key selection, and emphasize uniqueness and minimality of key columns.

Discover how a composite key uses two or more columns to create a unique primary key, ensuring no repetition of combined auto ID and ISBN values.

Surrogate keys are artificial identifiers, often autoincrement integers or GUIDs, used when natural keys like emails or SSNs pose privacy concerns or can change, preserving stability and indexing.

Explore super keys in SQL, defined as sets of one or more columns that uniquely identify records, and distinguish them from candidate keys with examples from a student table.

learn how a foreign key links child and parent tables by referencing a primary or unique key in the parent, illustrated with authors and books tables.