Jednoduchý způsob, jak získat cizí klíče pro danou tabulku:
SELECT
`column_name`,
`referenced_table_schema` AS foreign_db,
`referenced_table_name` AS foreign_table,
`referenced_column_name` AS foreign_column
FROM
`information_schema`.`KEY_COLUMN_USAGE`
WHERE
`constraint_schema` = SCHEMA()
AND
`table_name` = 'your-table-name-here'
AND
`referenced_column_name` IS NOT NULL
ORDER BY
`column_name`;