W3cubDocs

/MariaDB

Information Schema QUERY_CACHE_TABLES Table

MariaDB starting with 10.1.x

The QUERY_CACHE_TABLES table will be introduced in a future version of MariaDB. See MDEV-4682

Description

The QUERY_CACHE_TABLES table will be introduced as part of a future change to the QUERY_CACHE_INFO plugin, and shows all tables inside the query cache and how many queries have been cached for each.

The table is not a standard Information Schema table, and is a MariaDB extension.

It contains the following columns:

Column	Description
`TABLE_SCHEMA`	Table database schema
`TABLE_NAME`	Table name
`TABLE_HASHED`	Internal use (0/1)
`TABLE_TYPE`	Internal use, possible values: `NON_TRANSACT`, `NO_CACHE`, `ASK_TRANSACT`, `TRANSACT`, `"UNKNOWN %u"` where `%u` is internal value of `query_cache_table_entry->table_type`)
`QUERIES_IN_CACHE`	Number of queries in query cache using this table

Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party.

© 2019 MariaDB
Licensed under the Creative Commons Attribution 3.0 Unported License and the GNU Free Documentation License.
https://mariadb.com/kb/en/information-schema-query_cache_tables-table/