May 17, 2026, 11:40 PM

inbox/DataBase/PostgreSQL/object_management/find_fKey.sql

@@ -0,0 +1,16 @@
+SELECT
+o.conname AS constraint_name,
+(SELECT nspname FROM pg_namespace WHERE oid=m.relnamespace) AS source_schema,
+m.relname AS source_table,
+(SELECT a.attname FROM pg_attribute a WHERE a.attrelid = m.oid AND a.attnum = o.conkey[1] AND a.attisdropped = false) AS source_column,
+(SELECT nspname FROM pg_namespace WHERE oid=f.relnamespace) AS target_schema,
+f.relname AS target_table,
+(SELECT a.attname FROM pg_attribute a WHERE a.attrelid = f.oid AND a.attnum = o.confkey[1] AND a.attisdropped = false) AS target_column
+FROM
+pg_constraint o LEFT JOIN pg_class f ON f.oid = o.confrelid LEFT JOIN pg_class m ON m.oid = o.conrelid
+WHERE
+o.contype = 'f' AND o.conrelid IN (SELECT oid FROM pg_class c WHERE c.relkind = 'r');
+
+ 
+
+REFERENCE - https://stackoverflow.com/questions/1152260/postgres-sql-to-list-table-foreign-keys