How to check the index(es) in a table in a database?

Use the queries below to show the index of your table:

• For MySQL or MariaDB:

            SQL: SHOW INDEX FROM your_table_name;

• For PostgreSQL:

            SQL: SELECT * FROM pg_indexes WHERE tablename = 'your_table_name';

• For SQL Server:

            SQL: EXEC sp_helpindex 'your_table_name';

• For Oracle:

            SQL: SELECT index_name FROM all_indexes WHERE table_name = 'your_table_name';