SQL常用系统信息语句

一.查询指定表外键约束

SELECT  A.name AS 约束名 ,
        OBJECT_NAME(B.parent_object_id) AS 外键表 ,
        D.name AS 外键列 ,
        OBJECT_NAME(B.referenced_object_id) AS 主健表 ,
        C.name AS 主键列
FROM    sys.foreign_keys A
        INNER JOIN sys.foreign_key_columns B ON A.object_id = B.constraint_object_id
        INNER JOIN sys.columns C ON B.parent_object_id = C.object_id
                                    AND B.parent_column_id = C.column_id
        INNER JOIN sys.columns D ON B.referenced_object_id = D.object_id
                                    AND B.referenced_column_id = D.column_id
WHERE   OBJECT_NAME(B.referenced_object_id) = 'Position';