Learn how to write SQL (Structured Query Language) from scratch with the SQL Essentials training course. This course will easily step you through writing SQL using an online editor. SQL allows you to retrieve, sort, filter, group, aggregate, and calculate data stored in a SQL Server database. This course is designed for people wanting to learn how to interrogate data from a relational database, how to manipulate this data (Insert, update, and delete records).

You'll learn how to read and write complex queries to a database using one of the most in-demand skills - PostgreSQL. These skills are also applicable to any other major SQL database, such as MySQL, Microsoft SQL Server, Amazon Redshift, Oracle, and much more.

Learning SQL is one of the fastest ways to improve your career prospects as it is one of the most in-demand tech skills! In this course, you'll learn quickly and receive challenges and tests along the way to improve your understanding!

Although we use SQL Server to interrogate data throughout this course, SQL is a common language easily adapted to other RDBMS (relational database management systems) such as MySQL, IBM DB2, PostgreSQL, Oracle, Ingres, Sybase, and Microsoft Access.

Topics:

• Relation Database Management System (RDBMS)

• JOINS

• KEYS

• Data Types in SQL

• DATA DEFINITION LANGUAGE(DDL)

• DATA MANIPULATION LANGUAGE(DML)

• TRANSACTION CONTROL LANGUAGE(TCL)

• DATA CONTROL LANGUAGE(DCL)

• BASIC DEFINITION OF DATABASE MANAGEMENT (DBMS)

• SUBQUERIES USED IN DBMS

• OPERATORS USED IN SUBQUERIES