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Find foreign keys to a table in Postgres

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  1. SELECT                                                                     
  2.     tc.constraint_name, tc.table_name, kcu.column_name, 
  3.     ccu.table_name AS foreign_table_name,
  4.     ccu.column_name AS foreign_column_name 
  5. FROM 
  6.     information_schema.table_constraints AS tc 
  7.     JOIN information_schema.key_column_usage AS kcu ON tc.constraint_name = kcu.constraint_name
  8.     JOIN information_schema.constraint_column_usage AS ccu ON ccu.constraint_name = tc.constraint_name
  9. WHERE constraint_type = 'FOREIGN KEY' AND ccu.table_name='TABLE_NAME';

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