How to find all the relations between all mysql tables?

Question

How to find all the relations between all MySQL tables? If for example, I want to know the relation of tables in a database of having around 100 tables.

Is there any

Answer 1

Try

SELECT
`TABLE_NAME`,
`COLUMN_NAME`,
`REFERENCED_TABLE_NAME`,
`REFERENCED_COLUMN_NAME`
FROM `information_schema`.`KEY_COLUMN_USAGE`
WHERE `CONSTRAINT_SCHEMA` = 'YOUR_DATABASE_NAME' AND
`REFERENCED_TABLE_SCHEMA` IS NOT NULL AND
`REFERENCED_TABLE_NAME` IS NOT NULL AND
`REFERENCED_COLUMN_NAME` IS NOT NULL

do not forget to replace YOUR_DATABASE_NAME with your database name!