If you’re trying to understand how an existing database has been setup it can be very useful to see all of the tables/columns that foreign key into some other table/column. use INFORMATION_SCHEMA; select TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME from KEY_COLUMN_USAGE where REFERENCED_TABLE_NAME = ‘your_table_name’ AND REFERENCED_COLUMN_NAME = ‘your_column_name’