经常我们要查询表的索引,约束,相关性,触发器的属性,那么要知道sysobjects这个表的字段的意思,那么不管要查什么都没有问题!
Sysobjects:SQL-SERVER的每个数据库内都有此系统表,它存放该数据库内创建的所有对象,如约束、默认值、日志、规则、存储过程等,每个对象在表中占一行。以下是此系统表的字段名称和相关说明。
Name,id,xtype,uid,status:分别是对象名,对象ID,对象类型,所有者对象的用户ID,对象状态。
对象类型(xtype)。可以是下列对象类型中的一种:
Object type. Can be one of the following object types:
AF = Aggregate function (CLR)
C = CHECK constraint
D = Default or DEFAULT constraint
F = FOREIGN KEY constraint
L = Log
FN = Scalar function
FS = Assembly (CLR) scalar-function
FT = Assembly (CLR) table-valued function
IF = In-lined table-function
IT = Internal table
P = Stored procedure
PC = Assembly (CLR) stored-procedure
PK = PRIMARY KEY constraint (type is K)
RF = Replication filter stored procedure
S = System table
SN = Synonym
SQ = Service queue
TA = Assembly (CLR) DML trigger
TF = Table function
TR = SQL DML Trigger
TT = Table type
U = User table
UQ = UNIQUE constraint (type is K)
V = View
X = Extended stored procedure
当xtype='U' and status>0代表是用户建立的表,对象名就是表名,对象ID就是表的ID值。
用: select * from misa.dbo.sysobjects where xtype='U' and status>0 就可以列出库misa中所有的用户建立的表名。
SELECT * FROM SYSOBJECTS WHERE PARENT_OBJ = OBJECT_ID( 'CS') AND XTYPE='TR'
列出表cs的所有属性,上面是trigger!