sqlserver数据库中所有关系约束名

SELECT disTINCT       TOP (100) PERCENT o.xtype,      CASE o.xtype WHEN 'X' THEN '扩展存储过程'                    WHEN 'TR' THEN '触发器'                    WHEN 'PK' THEN '主键'                    WHEN 'F' THEN '外键'                    WHEN 'C' THEN '约束'                    WHEN 'V' THEN '视图'                    WHEN 'FN' THEN '函数-标量'                    WHEN 'IF' THEN '函数-内嵌'                    WHEN 'TF' THEN '函数-表值'                    ELSE '存储过程'       END AS 类型,o.name AS 对象名,o.crdate AS 创建时间,      o.refdate AS 更改时间,c.text AS 声明语句 FROM sysobjects AS o LEFT OUTER JOIN       syscomments AS c ON o.id = c.id WHERE (o.xtype IN ('X','TR','C','V','F','IF','TF','FN','P','PK')) AND       (OBJECTPROPERTY(o.id,N'IsMSShipped') = 0) ORDER BY 类型 DESC