Complete SQL Course: Become an Expert in Database Management

Master sql to interact with relational databases by creating, querying, and manipulating data across databases, tables, and queries, while controlling access with grant.

Master SQL syntax to write effective queries using select, from, and where, understand case sensitivity, and apply string literals in single quotes for retrieval, insertion, and update operations.

Master sql basics by using select and select distinct to retrieve data and filter duplicates, illustrated with creating an employees table and querying cities and departments.

Explore how to filter data with sql by and, or, and not, applying these operators to a product table and querying by category and price.

Explore how the where clause filters data in SQL queries and retrieves rows that meet conditions, using a sample employee table to show single, multiple, and not operations.

Master order by and group by to sort query results and summarize data with sum and totals by customer.

Master the insert into statement to add rows to an employees table with id, first name, last name, department, and salary. Learn single and multi-row inserts and column-specific data entry.

Master update and delete operations in sql by modifying salaries and removing rows in an employees table using set and where clauses.

Learn how to use SQL aggregate functions—min, max, count, sum, and average—to summarize data, with a hands-on example creating a products table and querying totals.

Master the sql like operator to filter data by patterns using wildcards such as percent and underscore. Learn to match starts, ends, contains, and exact-length names to retrieve targeted results.

Learn how the in and between operators in sql filter data efficiently, matching values or ranges. See practical examples using salaries to simplify queries and retrieve targeted employees.

Learn how aliases in SQL rename columns and tables for clearer results, using as for column aliases and table aliases such as e.

Explore how to use union to combine results from the employees and contractors tables in SQL, and how exist filters results with a subquery.

Learn how to use select into and insert into select to create a backup table and transfer data between tables in SQL.

Explore sql operators and master arithmetic, comparison, and logical operators on a numbers table, with practical demos of add, subtract, multiply, divide, and where clauses.

Learn how to create, use, and drop a database, create a sample employees table, insert data, and back up the database with MySQL dump for disaster recovery.

Explore create table, drop table, and alter table commands to manage a database: create an employee table, add a salary column, and rename the table to employee data.

Learn how the not null constraint in sql ensures essential columns like id and name always have data, demonstrated by creating an employees table and preventing inserting null values.

Learn how the unique constraint enforces distinct values across columns to preserve data integrity, illustrated with an employee table and a composite constraint on employee id and project name.

Learn how default constraints ensure a predefined value for missing data and how indexes speed up lookups, using an employees table with id, name, position, and salary.

Explore dates and views in SQL to manage time-based data, create an employees table, insert records, query joining dates, and build a view to simplify those queries.

Explore SQL injection vulnerabilities through a demo login flow and insecure queries. Learn to defend databases with parameterized queries, prepared statements, and input validation.