sql server的sysobjects表中xtype字段值的含义

xtype字段包含的值的意思如下：

AF = Aggregate function (CLR) 聚合函数(CLR) 

C = CHECK constraint CHECK约束 

D = Default or DEFAULT constraint 默认或DEFAULT约束 

F = FOREIGN KEY constraint 外键约束 

L = Log 日志 

FN = Scalar function 标量函数 

FS = Assembly (CLR) scalar-function 组装(CLR)标量函数 

FT = Assembly (CLR) table-valued function 程序集(CLR)表值函数 

IF = In-lined table-function 内嵌表函数 

IT = Internal table 内部表 

P = Stored procedure 存储过程 

PC = Assembly (CLR) stored-procedure 组装(CLR)存储过程 

PK = PRIMARY KEY constraint (type is K) 主键约束（类型是K） 

RF = Replication filter stored procedure 制筛选存储过程 

S = System table 系统表 

SN = Synonym 同义词 

SQ = Service queue 服务序列 

TA = Assembly (CLR) DML trigger 装配(CLR) DML触发器 

TF = Table function 表函数 

TR = SQL DML Trigger 触发器 

TT = Table type 

U = User table用户表 

UQ = UNIQUE constraint (type is K) 唯一约束（类型是K） 

V = View 视图 

X = Extended stored procedure 扩展存储过程

 

原文：https://blog.csdn.net/jackmacro/article/details/6405871