错误 1604 创建 MySQL 存储过程。 MySQL 版本 5.7.19

Question

我正在尝试将我过去编写的 SQL 存储过程转换为 MySQL。这个错误给我带来了麻烦。

我正在使用 phpmyadmin 4.7.4 创建这个程序 我得到的错误是 SET userID = SELECT MAX(ID) + 1 FROM users 我还在代码中在它之前放置了一个标签，所以你们更容易找到。

输出的错误是：

MySQL said: Documentation /#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SET userID = SELECT MAX(ID) + 1 FROM users; -- Default to 1 if the table is em' at line 13

CREATE PROCEDURE uspAddUser(username VARCHAR(50), email VARCHAR(50), password VARCHAR(50), avatar VARCHAR(50))
BEGIN
DECLARE userID   INTEGER;
BEGIN
ROLLBACK;   -- Rollback transaction on error
END;
START TRANSACTION
-- Get the next highest ID and lock the table until the end of the transaction

<ERROR> -> SET userID = SELECT MAX(ID) + 1 FROM users;
-- Default to 1 if the table is empty

SET userID = COALESCE(userID, 1);
-- CREATE new record

INSERT INTO users(userID, username, email, password, avatar)
VALUES(ID, email, password, avatar, 1);  -- 1 = Active

-- return ID to calling program
SELECT userID AS ID;

COMMIT;
END;//

如果你们想看的话，这是原始的 SQL 查询

GO
CREATE PROCEDURE uspAddTeam
 @strTeam           VARCHAR(50)
,@strMascot         VARCHAR(50)

AS
SET NOCOUNT ON      -- Report Only Errors
SET XACT_ABORT ON   -- Rollback transaction on error

BEGIN TRANSACTION

DECLARE @intTeamID   INTEGER

-- Get the next highest ID and lock the table until the end of the transaction
SELECT @intTeamID = MAX(intTeamID) + 1 FROM TTeams (TABLOCKX)

-- Default to 1 if the table is empty
SELECT @intTeamID = COALESCE(@intTeamID, 1)

-- CREATE new record
INSERT INTO TTeams(intTeamID, strTeam, strMascot, intTeamStatusID)
VALUES(@intTeamID, @strTeam, @strMascot, 1)  -- 1 = Active

-- return ID to calling program
SELECT @intTeamID AS intTeamID

COMMIT TRANSACTION
GO

Answer 1

你可以试试这个：

DROP PROCEDURE IF EXISTS `uspAddUser`;
DELIMITER //
CREATE PROCEDURE `uspAddUser` (username VARCHAR(50), email VARCHAR(50), password VARCHAR(50), avatar VARCHAR(50))
BEGIN
    DECLARE `userID` BIGINT(20);  

    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        ROLLBACK;        
    END;    

    START TRANSACTION;
    -- Get the next highest ID and lock the table until the end of the transaction
    SET userID = (SELECT MAX(ID) + 1 FROM users);
    -- Default to 1 if the table is empty
    SET userID = COALESCE(userID, 1);
    -- CREATE new record
    INSERT INTO users(userID, username, email, password, avatar)
    VALUES(ID, email, password, avatar, 1);  -- 1 = Active
    -- return ID to calling program
    SELECT userID AS ID;
    COMMIT;
END//
DELIMITER ;

问题

• ID 的表是否设置为自增列？如果没有，请做..因为它会消除部分：

  -- Get the next highest ID and lock the table until the end of the transaction
  SET userID = (SELECT MAX(ID) + 1 FROM users);