在 SQL Server 中 你可以使用以下查询来找到引用 的 FOREIGN KEY 约束

SELECT
f.name AS ForeignKeyName,
OBJECT_NAME(f.parent_object_id) AS ReferencingTable,
COL_NAME(fc.parent_object_id, fc.parent_column_id) AS ReferencingColumn,
OBJECT_NAME (f.referenced_object_id) AS ReferencedTable,
COL_NAME(fc.referenced_object_id, fc.referenced_column_id) AS ReferencedColumn
FROM
sys.foreign_keys AS f
INNER JOIN
sys.foreign_key_columns AS fc ON f.object_id = fc.constraint_object_id
WHERE
OBJECT_NAME (f.referenced_object_id) = 'pmw_house'
ORDER BY
ReferencingTable, ReferencingColumn;

当你尝试截断（TRUNCATE）一个数据库表时，如果该表被其他表的 FOREIGN KEY 约束引用，你将无法执行该操作。这是因为截断表会删除表中的所有数据，并且通常也会重置表的身份标识（IDENTITY）值，这可能会破坏外键引用的完整性。