存储过程中If Else的使用方法

数据库中有两张表，A表主键为自动增长的并且是B表的外键且允许为空。现在要通过编程向B表中插入数据,可是在程序中是不允许给Int类型赋空值的如果不赋值就默认为0。为了解决这个为题最后考虑用存储过程的If Else最方便，具体的存储过程如下

create PROCEDURE [dbo].[P_Form_Control_Info_Add]

@TypeName varchar(20),

@Description varchar(50),

@CtlColSpan int,

@Sort int,

@SourceID int,

@FieldID int,

@TableID int

AS

if @SourceID = 0

begin

INSERT INTO T_Form_Control_Info (

[TypeName],

[Description],

[CtlColSpan],

[Sort],

[FieldID],

[TableID]

) VALUES (

@TypeName,

@Description,

@CtlColSpan,

@Sort,

@FieldID,

@TableID

)

end

else

begin

INSERT INTO T_Form_Control_Info (

[TypeName],

[Description],

[CtlColSpan],

[Sort],

[SourceID],

[FieldID],

[TableID]

) VALUES (

@TypeName,

@Description,

@CtlColSpan,

@Sort,

@SourceID,

@FieldID,

@TableID

)

end

return SCOPE_IDENTITY()