How to get the size of mysql tables?

check_size.sql

-- All Databases and Tables
SELECT
    table_schema AS `Database`,
    table_name AS `Table`,
    round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB`
FROM
    information_schema.TABLES
ORDER BY
    (data_length + index_length)
    DESC;

-- All Tables from a Database
SELECT
    table_name AS `Table`,
    round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB`
FROM
    information_schema.TABLES
WHERE
    table_schema = 'DATABASE_NAME'
ORDER BY
    (data_length + index_length)
    DESC;
    
-- A table from a Database
SELECT
    table_name AS `Table`,
    round(((data_length + index_length) / 1024 / 1024),2) `Size in MB`
FROM
    information_schema.TABLES
WHERE
    table_schema = 'DATABASE_NAME'
    AND table_name = 'TABLE_NAME';