LIMIT and OFFSET in MySQL Workbench

• In MySQL Workbench, the `LIMIT` and `OFFSET` clauses are used to control the number of rows returned by a `SELECT` query and to skip a certain number of rows, respectively. These clauses are commonly used for pagination and fetching subsets of data from large result sets. 

Here's a detailed explanation of how `LIMIT` and `OFFSET` work, along with examples:

• Basic Syntax:

    SELECT columns

    FROM table

    LIMIT row_count OFFSET offset_value;

• Consider a "products" table with the following data:

    CREATE TABLE products (

        product_id INT PRIMARY KEY,

        product_name VARCHAR(100),

        price DECIMAL(10, 2)

    );

    INSERT INTO products (product_id, product_name, price)

    VALUES

        (1, 'Laptop', 1000.00),

        (2, 'Smartphone', 500.00),

        (3, 'Tablet', 300.00),

        (4, 'Monitor', 200.00),

        (5, 'Keyboard', 50.00);

Using LIMIT without OFFSET:

• To retrieve a specific number of rows from the beginning of the result set:

    SELECT * FROM products LIMIT 3;

• This query would return the first 3 rows from the "products" table.

Using LIMIT with OFFSET:

• To retrieve a specific number of rows starting from a certain offset:

    SELECT * FROM products LIMIT 2 OFFSET 2;

• This query would return 2 rows starting from the 3rd row (offset 2), effectively skipping the first 2 rows.

Using OFFSET Only:

• While it's less common, you can use `OFFSET` without `LIMIT` to skip a certain number of rows and retrieve the rest:

    SELECT * FROM products OFFSET 3;

• This query would return all rows starting from the 4th row (offset 3).

Using LIMIT and OFFSET for Pagination:

• When used together, `LIMIT` and `OFFSET` are commonly used for implementing pagination.

    -- Page 1 (first 3 products)

    SELECT * FROM products LIMIT 3 OFFSET 0;

    -- Page 2 (next 3 products)

    SELECT * FROM products LIMIT 3 OFFSET 3;

Using LIMIT and OFFSET with Order By:

• You can combine `LIMIT` and `OFFSET` with the `ORDER BY` clause to fetch a specific page of ordered data.

    SELECT * FROM products ORDER BY price DESC LIMIT 2 OFFSET 1;

• Using `LIMIT` and `OFFSET`, you can control the number of rows returned by a query and fetch subsets of data, which is particularly useful when dealing with large datasets. When using `OFFSET`, be aware that it's zero-based, and combining it with `LIMIT` allows you to implement efficient pagination for displaying data in chunks.