那有用吗??
我说的缺省也就是重载呀
如在调用时
Select DBO.F_NC(1001,0) From SysUser Where UID = 1
Select DBO.F_NC(1001) From SysUser Where UID = 1
是一样的,如第二个参数不输入的话,就能默认为是0的呀??急呀
我说的缺省也就是重载呀
如在调用时
Select DBO.F_NC(1001,0) From SysUser Where UID = 1
Select DBO.F_NC(1001) From SysUser Where UID = 1
是一样的,如第二个参数不输入的话,就能默认为是0的呀??急呀
Select DBO.F_NC(1001,default) From SysUser Where UID = 1
传出参数,可以使用insert...exec语法,或者全局临时表等等。
这个表达式当你一个对象的含义重新定义时,程序仍然不变。