Introduction to SQL

SQL (Structured Query Language) is a powerful language for managing and manipulating relational databases. It allows you to interact with your MySQL database to perform tasks such as data retrieval, insertion, updating, and deletion.


SELECT Statement

The 

SELECT
statement is used to retrieve data from a database. Here's a basic example:

            SELECT column1, column2
            FROM tablename;

This query selects data from the specified columns in the given table.


INSERT Statement

The 

INSERT
statement is used to add new records to a table. For example:

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

UPDATE Statement

The 

UPDATE
statement modifies existing records in a table. Here's a simple update query:

            UPDATE tablename
            SET column1 = new_value
            WHERE some_column = some_value;

DELETE Statement

The 

DELETE
statement removes records from a table based on a condition. Example:

            DELETE FROM tablename
            WHERE some_column = some_value;

Conclusion

SQL is a fundamental language for managing MySQL databases. You've learned the basics of writing SQL queries to select, insert, update, and delete data from a MySQL database. Practice and expand your knowledge to become proficient in database management.