SQL Queries

Introduction to SQL Queries

This section provides a comprehensive overview of SQL queries, covering basic syntax, common clauses, and best practices. It's designed for both beginners and experienced developers looking to solidify their understanding of SQL.

SELECT Statement

The SELECT statement is the foundation of SQL, allowing you to retrieve data from one or more tables. Learn how to filter, sort, and aggregate your data using various clauses.

The `SELECT` statement retrieves data from a database. The basic syntax is:

SELECT column1, column2 FROM table_name;

You can add a `WHERE` clause to filter the data based on a condition.

SELECT * FROM customers WHERE country = 'USA';

INSERT Statement

The `INSERT` statement is used to add new rows of data into a table.

To insert data, use the following syntax:

INSERT INTO table_name (column1, column2) VALUES (value1, value2);