从我的 PhpMyadmin SQL 选项卡运行以下查询

Question

我正在我的 PhpMyadmin SQL 选项卡中运行以下查询：

CREATE TRIGGER trg_bansach ON bill AFTER INSERT AS
BEGIN
    UPDATE addbook
    SET Quality = Quality - (
        SELECT QualitySale
        FROM inserted 
        WHERE book_id = addbook.book_id
    )
    FROM addbook
    JOIN inserted ON addbook.book_id = inserted.book_id
END

但每次我收到此错误消息时：

#1064 - 您的 SQL 语法有错误；检查与您的 MySQL 服务器版本相对应的手册，以获取在“FROM addbook”附近使用的正确语法 WHERE addbook.book_id = 插入的.book_id END' 在第 10 行

Answer 1

使用delimiter

DELIMITER //
CREATE TRIGGER trg_bansach ON bill AFTER INSERT AS
BEGIN
    UPDATE addbook
    SET Quality = Quality - (
        SELECT QualitySale
        FROM inserted 
        WHERE book_id = addbook.book_id
    )
    FROM addbook
    JOIN inserted ON addbook.book_id = inserted.book_id;
END
//
DELIMITER ;