How to Accurately Calculate the Size of Your MySQL Database for Web Hosting?

Estimating MySQL Database Size for Web Hosting

If you're considering selecting a web hosting provider, accurately determining the size of your MySQL database is crucial. Fortunately, there are tools within MySQL to help you understand how much space your database consumes.

Checking Database Size

To uncover the size of your database, you can employ the command SHOW TABLE STATUS LIKE 'table_name'. This provides information like:

• Name: Table name
• Rows: Number of rows
• Avg. Row Length: Average size of each row
• Data_Length: User data space
• Index Length: Index space

However, the output can be misleading. For instance, if you see Data_Length as 362000, it does not necessarily mean 144800000 bytes of data for that table.

Accurate Calculation of Database Size

To obtain the true size of your database, including both data and index space, you can execute the following query:

SELECT table_schema "database name",
    sum( data_length + index_length ) / 1024 / 1024 "database size in MB",
    sum( data_free )/ 1024 / 1024 "free space in MB"
FROM information_schema.TABLES
GROUP BY table_schema;

This will provide a breakdown of database size, including both used and free space. The table_schema column represents the database name, while the database size is displayed in megabytes (MB).

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