mysql.table_stats Table

The mysql.table_stats table stores engine-independent statistics about tables, such as row counts, to assist the optimizer.

The mysql.table_stats table is one of three tables storing data used for Engine-independent table statistics. The others are mysql.column_stats and mysql.index_stats.

It is populated when the ANALYZE TABLE statement is run, although not by default. See 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 for details.

This table uses the Aria 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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