Untuk cara menampilkan informasi lengkap di table seperti constraint, primary key, foreign key dll. Bisa menulis sintaks berikut
SELECT * FROM information_schema.KEY_COLUMN_USAGE WHERE TABLE_NAME = 'nama_tabel';
Contoh :
SELECT * FROM information_schema.KEY_COLUMN_USAGE WHERE TABLE_NAME = 'pembelian';
SELECT * FROM information_schema.KEY_COLUMN_USAGE WHERE TABLE_NAME = 'mahasiswa';