We can even get a bit fancier and convert the normal size values from bytes into something more useful and understandable to most people like megabytes. 5.4.4.5 Binary Log Transaction Compression. INDEX_LENGTH is the length (or size) of the index file for the table (also in bytes).Īrmed with this information, we can execute a query that will list all tables in a specific database along with the disk space (size) of each. 5.4.4.4 Logging Format for Changes to mysql Database Tables.DATA_LENGTH is the length (or size) of all data in the table (in bytes).List Table Sizes From a Single DatabaseĪs can seen in the official documentation, the INFORMATION_SCHEMA.TABLES table contains around 20 columns, but for the purpose of determining the amount of disk space used by tables, we’ll focus on two columns in particular: DATA_LENGTH and INDEX_LENGTH. For our purposes we’re particularly interested in the tables metadata, which we can query to actually extract the size of various tables in the system. Everything from views and user_privilieges to columns and tables can be found in the INFORMATION_SCHEMA. Regardless of the name, what matters is the information provided by these INFORMATION_SCHEMA tables. MySQL Services.msc MySQL Services. While most other databases refer to this information as a catalog, the official MySQL documentation refers to the INFORMATION_SCHEMA metadata as tables. Step 1: Stop the existing MySQL instance using services.msc, shutdown must be clean so that the instance flushes any pending changes to disk. changing the path of saving the database - by default is saved to disk C. Like most relational databases, MySQL provides useful metadata about the database itself. settings for connecting to a remote database.
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