查询以查找所有FK约束及其删除规则（SQL Server）

Question

In SQL Server 2005, can I issue an SQL query to list all FK constraints on tables within the DB, and show the delete rule? (ie nothing, cascade, set null, or set default)

The output I'm looking for is something akin to:

FK_NAME                  ON_DELETE
==================================
FK_LINEITEM_STATEMENT    CASCADE
FK_ACCOUNTREP_CLIENT     NOTHING

Answer 1

You can try this:

SELECT name, delete_referential_action_desc
FROM sys.foreign_keys

Answer 2

这里游戏的后期不多，但你也可以试试这个：

select * from INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS

Answer 3

You can use also expression in the WHERE block:

objectproperty(object_id('FK_your_constraint_name'), 'CnstIsDeleteCascade')

or

objectproperty(your_constraint_object_id, 'CnstIsDeleteCascade')