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29 lines
2.9 KiB
29 lines
2.9 KiB
2 months ago
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create definer = `mysql.sys`@localhost view sys.schema_redundant_indexes as
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select `sys`.`redundant_keys`.`table_schema` AS `table_schema`,
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`sys`.`redundant_keys`.`table_name` AS `table_name`,
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`sys`.`redundant_keys`.`index_name` AS `redundant_index_name`,
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`sys`.`redundant_keys`.`index_columns` AS `redundant_index_columns`,
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`sys`.`redundant_keys`.`non_unique` AS `redundant_index_non_unique`,
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`sys`.`dominant_keys`.`index_name` AS `dominant_index_name`,
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`sys`.`dominant_keys`.`index_columns` AS `dominant_index_columns`,
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`sys`.`dominant_keys`.`non_unique` AS `dominant_index_non_unique`,
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if(((0 <> `sys`.`redundant_keys`.`subpart_exists`) or (0 <> `sys`.`dominant_keys`.`subpart_exists`)), 1,
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0) AS `subpart_exists`,
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concat('ALTER TABLE `', `sys`.`redundant_keys`.`table_schema`, '`.`', `sys`.`redundant_keys`.`table_name`,
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'` DROP INDEX `', `sys`.`redundant_keys`.`index_name`,
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'`') AS `sql_drop_index`
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from (`sys`.`x$schema_flattened_keys` `redundant_keys` join `sys`.`x$schema_flattened_keys` `dominant_keys`
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on (((`sys`.`redundant_keys`.`table_schema` = `sys`.`dominant_keys`.`table_schema`) and
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(`sys`.`redundant_keys`.`table_name` = `sys`.`dominant_keys`.`table_name`))))
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where ((`sys`.`redundant_keys`.`index_name` <> `sys`.`dominant_keys`.`index_name`) and
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(((`sys`.`redundant_keys`.`index_columns` = `sys`.`dominant_keys`.`index_columns`) and
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((`sys`.`redundant_keys`.`non_unique` > `sys`.`dominant_keys`.`non_unique`) or
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((`sys`.`redundant_keys`.`non_unique` = `sys`.`dominant_keys`.`non_unique`) and
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(if((`sys`.`redundant_keys`.`index_name` = 'PRIMARY'), '', `sys`.`redundant_keys`.`index_name`) >
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if((`sys`.`dominant_keys`.`index_name` = 'PRIMARY'), '', `sys`.`dominant_keys`.`index_name`))))) or
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((locate(concat(`sys`.`redundant_keys`.`index_columns`, ','), `sys`.`dominant_keys`.`index_columns`) = 1) and
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(`sys`.`redundant_keys`.`non_unique` = 1)) or
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((locate(concat(`sys`.`dominant_keys`.`index_columns`, ','), `sys`.`redundant_keys`.`index_columns`) = 1) and
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(`sys`.`dominant_keys`.`non_unique` = 0))));
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