# mysql.table\_stats Table

The `mysql.table_stats` table is one of three tables storing data used for [Engine-independent table statistics](/docs/server/ha-and-performance/optimization-and-tuning/query-optimizations/statistics-for-optimizing-queries/engine-independent-table-statistics.md). The others are [mysql.column\_stats](/docs/server/reference/system-tables/the-mysql-database-tables/mysql-column_stats-table.md) and [mysql.index\_stats](/docs/server/reference/system-tables/the-mysql-database-tables/mysql-index_stats-table.md).

It is populated when the [ANALYZE TABLE](/docs/server/reference/sql-statements/table-statements/analyze-table.md) statement is run, although not by default. See [Collecting Statistics with the ANALYZE TABLE Statement](/docs/server/ha-and-performance/optimization-and-tuning/query-optimizations/statistics-for-optimizing-queries/engine-independent-table-statistics.md#collecting-statistics-with-the-analyze-table-statement) for details.

It is possible to manually update the table and, unlike most system tables, there are some scenarios where this could be useful. See [Manual updates to statistics tables](/docs/server/ha-and-performance/optimization-and-tuning/query-optimizations/statistics-for-optimizing-queries/engine-independent-table-statistics.md#manual-updates-to-statistics-tables) for details.

This table uses the [Aria](/docs/server/server-usage/storage-engines/aria.md) storage engine.

The `mysql.table_stats` table contains the following fields:

| Field       | Type                | Null | Key | Default | Description                     |
| ----------- | ------------------- | ---- | --- | ------- | ------------------------------- |
| db\_name    | varchar(64)         | NO   | PRI | NULL    | Database the table is in .      |
| table\_name | varchar(64)         | NO   | PRI | NULL    | Table name.                     |
| cardinality | bigint(21) unsigned | YES  |     | NULL    | Number of records in the table. |

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