query_cache_size in mysql code example

Example 1: mysql get table size

SELECT
  TABLE_NAME AS `Table`,
  ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `Size (MB)`
FROM
  information_schema.TABLES
WHERE
  TABLE_SCHEMA = "bookstore"
ORDER BY
  (DATA_LENGTH + INDEX_LENGTH)
DESC;

Example 2: mysql check db size

SELECT table_schema "DB Name",
        ROUND(SUM(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
FROM information_schema.tables 
GROUP BY table_schema;

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Sql Example

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