存储过程里添加信息到第一个表时得到第一个表的新增ID，并用此ID添加信息到第二个表

ALTER PROCEDURE [dbo].[AddBbsTitle]

(@UserId uniqueidentifier,

 @UserName nvarchar(256),

 @Cid int,

 @Title nvarchar(500),

 @TitleColour nvarchar(50),

 @Content ntext,

 @IsTitle bit

)

AS

declare @TitleId int　　//这里注意

INSERT INTO BbsTitle

   (UserId, UserName, CategoryId, Title, TitleColour, Body, AnswerUserId, AnswerUserName)

    VALUES

   (@UserId, @UserName, @Cid, @Title, @TitleColour, @Content, @UserId, @UserName)

    select @TitleId=@@Identity　//这里注意

insert into BbsContent

 (UserId, UserName, Title, Body, TitleId, CategoryId )

 values

 (@UserId, @UserName, @Title, @Content, @TitleId, @Cid)  

 转自：http://blog.csdn.net/jxdom/article/details/1921492