11/3/2023 0 Comments Mysql show tables from![]() 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. This script lists all of the tables in a MySQL database and exports the list as a CSV Install-Module InvokeQuery Run the above command if you do not. You can also get this list using the mysqlshow dbname command. ![]() 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. SHOW TABLES lists the non- TEMPORARY tables in a given database.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. While most other databases refer to this information as a catalog, the official MySQL documentation refers to the INFORMATION_SCHEMA metadata as tables. For MVCC, the timestamp value reflects the data dictionary cache. Specifically, it is the clustered index size, in pages, multiplied by the. Like most relational databases, MySQL provides useful metadata about the database itself. is the approximate amount of space allocated for the clustered index, in bytes.
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