How to list table foreign keys

Is there a way using SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in.

You can do this via the information_schema tables. For example:

SELECT
    tc.table_schema, 
    tc.constraint_name, 
    tc.table_name, 
    kcu.column_name, 
    ccu.table_schema AS foreign_table_schema,
    ccu.table_name AS foreign_table_name,
    ccu.column_name AS foreign_column_name 
FROM information_schema.table_constraints AS tc 
JOIN information_schema.key_column_usage AS kcu
    ON tc.constraint_name = kcu.constraint_name
    AND tc.table_schema = kcu.table_schema
JOIN information_schema.constraint_column_usage AS ccu
    ON ccu.constraint_name = tc.constraint_name
WHERE tc.constraint_type = 'FOREIGN KEY'
    AND tc.table_schema='myschema'
    AND tc.table_name='mytable';

If you need to go the other way, i.e., find all places a table is used as a foreign table, you can replace the last two conditions with:

    AND ccu.table_schema='myschema'
    AND ccu.table_name='mytable';