SQL 查询表外键_T-Sql 2016——级联删除外键查询

SELECT    fk.name AS foreign_key_name,
          oSub.name AS table_name,
          SubCol.name AS table_column,
          oMain.name AS references_table_name,
          MainCol.name AS references_table_column,
          fk.delete_referential_action_desc
FROM      sys.foreign_keys fk
JOIN      sys.all_objects oSub ON(fk.parent_object_id = oSub.object_id)
JOIN      sys.all_objects oMain ON(fk.referenced_object_id = oMain.object_id)
JOIN      sys.foreign_key_columns fkCols ON(fk.object_id = fkCols.constraint_object_id)
JOIN      sys.columns SubCol ON(oSub.object_id = SubCol.object_id AND fkCols.parent_column_id = SubCol.column_id)
JOIN      sys.columns MainCol ON(oMain.object_id = MainCol.object_id AND fkCols.referenced_column_id = MainCol.column_id)
WHERE     fk.delete_referential_action_desc = 'CASCADE'
ORDER BY  oSub.name ;