Sql server 更新存储过程MS SQL后检查记录值

这将执行一个存储过程

EXEC dbo.Web_update
 @hHomeEmail = 'me@me.com',
 @pPassword = 'XXXXX',
 @mMemberID = '123456'

存储过程

 UPDATE Member 
 SET pass_w = @pPassword, 
 HomeEmail = @hHomeEmail
 WHERE MemberID=@mMemberID;

我想检查HomeEmail的值，并在更新后传递w（如果为NULL或不返回布尔值）作为该调用的结果

----------更新----------

现在我想检查一下：

pass_w=NULL

或

通过w=“”

或

HomeEmail=NULL

或

HomeEmail=''

如果其中一个被强制转换（1为位）

---

ELSE CAST（0为位）

您可以将输出参数添加到存储过程中：

 CREATE PROCEDURE dbo.Web_update
 (
     @hHomeEmail = varchar(10),
     @pPassword = varchar(10),
     @mMemberID = varchar(10)
     @@pIsNull bit OUTPUT
 )
 AS
 UPDATE Member 
 SET pass_w = @pPassword, 
 HomeEmail = @hHomeEmail
 WHERE MemberID=@mMemberID;

 SELECT @pIsNull = CAST(CASE WHEN EXISTS (
                                          SELECT 1 
                                          FROM Member 
                                          WHERE MemberID=@mMemberID 
                                          AND pass_w IS NULL 
                                          AND HomeEmail IS NULL) THEN 1 
                             ELSE 0 END As Bit)

---

为什么首先在这些列中允许null？HomeEmail和pass_w都允许null的原因可能是重复的，稍后会添加到成员表中。现在，会员可以在线登录，但必须更新HomeEmail并通过才能继续。

 CREATE PROCEDURE dbo.Web_update
 (
     @hHomeEmail = varchar(10),
     @pPassword = varchar(10),
     @mMemberID = varchar(10)
     @@pIsNull bit OUTPUT
 )
 AS
 UPDATE Member 
 SET pass_w = @pPassword, 
 HomeEmail = @hHomeEmail
 WHERE MemberID=@mMemberID;

 SELECT @pIsNull = CAST(CASE WHEN EXISTS (
                                          SELECT 1 
                                          FROM Member 
                                          WHERE MemberID=@mMemberID 
                                          AND pass_w IS NULL 
                                          AND HomeEmail IS NULL) THEN 1 
                             ELSE 0 END As Bit)