schema_redundant_indexes

Overview

In 10.6 ES, 10.6 CS:

A description for this sys Table has not yet been added to this Documentation.

In 10.5 ES, 10.5 CS, 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:

Not present

See also: Sys Database Tables for MariaDB Enterprise Server 10.6 and in 10.6 CS

DETAILS

SCHEMA

VIEW `schema_redundant_indexes` AS SELECT
  `redundant_keys`.`table_schema` AS `table_schema`,
  `redundant_keys`.`table_name` AS `table_name`,
  `redundant_keys`.`index_name` AS `redundant_index_name`,
  `redundant_keys`.`index_columns` AS `redundant_index_columns`,
  `redundant_keys`.`non_unique` AS `redundant_index_non_unique`,
  `dominant_keys`.`index_name` AS `dominant_index_name`,
  `dominant_keys`.`index_columns` AS `dominant_index_columns`,
  `dominant_keys`.`non_unique` AS `dominant_index_non_unique`,
  if(`redundant_keys`.`subpart_exists` <> 0 or `dominant_keys`.`subpart_exists` <> 0,1,0) AS `subpart_exists`,
  concat('ALTER TABLE `',`redundant_keys`.`table_schema`,'`.`',`redundant_keys`.`table_name`,'` DROP INDEX `',`redundant_keys`.`index_name`,'`') AS `sql_drop_index`
FROM (`sys`.`x$schema_flattened_keys` `redundant_keys` join `sys`.`x$schema_flattened_keys` `dominant_keys` on(`redundant_keys`.`table_schema` = `dominant_keys`.`table_schema` and `redundant_keys`.`table_name` = `dominant_keys`.`table_name`)) where `redundant_keys`.`index_name` <> `dominant_keys`.`index_name` and (`redundant_keys`.`index_columns` = `dominant_keys`.`index_columns` and (`redundant_keys`.`non_unique` > `dominant_keys`.`non_unique` or `redundant_keys`.`non_unique` = `dominant_keys`.`non_unique` and if(`redundant_keys`.`index_name` = 'PRIMARY','',`redundant_keys`.`index_name`) > if(`dominant_keys`.`index_name` = 'PRIMARY','',`dominant_keys`.`index_name`)) or locate(concat(`redundant_keys`.`index_columns`,','),`dominant_keys`.`index_columns`) = 1 and `redundant_keys`.`non_unique` = 1 or locate(concat(`dominant_keys`.`index_columns`,','),`redundant_keys`.`index_columns`) = 1 and `dominant_keys`.`non_unique` = 0)

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Added in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Added in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Not present.

10.5 Community

  • Not present.

10.4 Enterprise

  • Not present.

10.4 Community

  • Not present.

10.3 Enterprise

  • Not present.

10.3 Community

  • Not present.

10.2 Enterprise

  • Not present.

10.2 Community

  • Not present.

EXTERNAL REFERENCES