How to use DROP INDEX Statement In MariaDB
In MariaDB, to remove an existing index from a table, use the DROP INDEX statement. Structures called indexes let database tables retrieve data more quickly. When an index is no longer needed or you wish to replace it with a different kind of index, dropping it can be helpful.
Syntax:
DROP INDEX idx_name ON table_name;
Replace table_name with the name of the table where the index is declared and index_name with the name of the index you wish to drop.
Example:
DROP INDEX name_index ON example_table;
-- Showing the Indexes defined on example_table
SHOW INDEX FROM example_table;
Output:
Explanation: The above query remove the name_index Index defined on example_table.
Dropping an Index in MariaDB
In MariaDB, indexes play a crucial role in enhancing query performance by facilitating fast data access within a table. However, there are scenarios where you might need to drop indexes. This article explores various methods to drop indexes in MariaDB, including using DROP INDEX
, ALTER TABLE DROP INDEX
, and ALTER TABLE DROP KEY
statements. Additionally, it covers dropping a primary key index using ALTER TABLE DROP PRIMARY KEY
.
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