Question

如果用户名和密码在users表中匹配，我想生成访问令牌。但是，如何将以前返回的值用于下一个插入查询？我用###标记了缺失值我不知道###。

CREATE PROCEDURE [dbo].[GetAccessToken]
    @userId varchar(50),
    @password varchar(50)
AS
   SELECT Id 
   FROM Users 
   WHERE UserId = @userId AND Password = @password 

   IF @@ROWCOUNT != 0 
   BEGIN
       SET @token = NEWID();

       INSERT INTO AccessTokens (Token, UserId) 
       VALUES(CONVERT(varchar(255), @token), ###I Don't Know###)
        END
       RETURN 0
   END

请帮帮我。提前谢谢。

Answer 1

只需将@userId作为INSERT

的第二个参数传递

INSERT INTO AccessTokens (Token, UserId) 
VALUES(CONVERT(varchar(255), @token), @userId)

Answer 2

试试这个：

CREATE PROCEDURE [dbo].[GetAccessToken]
    @userId varchar(50),
    @password varchar(50)
AS
   DECLARE @ID INT
   SELECT @ID = Id 
   FROM Users 
   WHERE UserId = @userId AND Password = @password 

   IF (@ID IS NOT NULL )
   BEGIN
       SET @token = NEWID();

       INSERT INTO AccessTokens (Token, UserId) 
       VALUES(CONVERT(varchar(255), @token), @ID)

       RETURN 0
   END

Answer 3

使用选项INSERT .. SELECT .. pattern

CREATE PROCEDURE [dbo].[GetAccessToken]
@userId varchar(50),
@password varchar(50)
AS
BEGIN
  INSERT INTO AccessTokens (Token, UserId)
  SELECT CONVERT(varchar(255), NEWID()), Id
  FROM Users 
  WHERE UserId = @userId AND Password = @password
END

如何将以前的结果集用于SQL Server中的下一个查询

3 个答案: