How Can I Find Index Information in My MySQL Database?

Exploring Index Information in MySQL

Want to know if your MySQL database or table has an index? The following methods can help you get the information you need easily:

Database level index query:

To view all indexes in the database, you can use the STATISTICS table. This table is located in INFORMATION_SCHEMA and contains information about all table indexes in the database. Use the following query:

SELECT DISTINCT
    TABLE_SCHEMA,
    TABLE_NAME,
    INDEX_NAME
FROM INFORMATION_SCHEMA.STATISTICS;

Specific table index query:

To view the indexes in a specific table, use the SHOW INDEX statement. This statement displays all indexes in the table, including index names, columns, and index types. Use the following queries:

SHOW INDEX FROM your_table;

Using these queries, you can easily view index information in a MySQL database or table to better understand your database and optimize query performance.

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