mysql - 触发以跟踪 MySQL 数据库中的更改

Question

我似乎无法创建触发器。我已经尝试了以下两种更新方式。我不断收到插入语句的语法错误。我搜索了过去 4 小时的论坛和网络搜索，没有任何变化。这里有更多的代码，它基本上是重复的。任何帮助，将不胜感激。谢谢你。我正在运行 MySQL 5.0 并以管理员/Root 身份通过 phpMyAdmin 2.8.2.4 进行访问。

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尝试 1(在所有字段和名称上使用和不使用引号)

CREATE TRIGGER insert_classes
AFTER insert ON Classes
FOR EACH ROW
BEGIN
    insert into insert_tracking_classes (classID, Title, classDesc, Category, isEvent, picLeft, picTop, picRight, picBottom, prnColor, modified)
    values(NEW.classID, NEW.Title, NEW.classDesc, NEW.Category, NEW.isEvent, NEW.picLeft, NEW.picTop, NEW.picRight, NEW.picBottom, NEW.prnColor, NOW());
END;

CREATE TRIGGER insert_classes
AFTER insert ON Classes
FOR EACH ROW
BEGIN
insert into insert_tracking_classes
        set classID = NEW.classID,
        Title = NEW.Title,
        classDesc = NEW.classDesc,
        Category = NEW.Category,
        isEvent = NEW.isEvent,
        picLeft = NEW.picLeft,
        picTop = NEW.picTop,
        picRight = NEW.picRight,
        picBottom = NEW.picBottom,
        prnColor = NEW.prnColor,
        modified = NOW(); 
END;

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错误

 #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 '' at line * (at the end of the insert/values statement)

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尝试 2

 DELIMITER $$
 CREATE TRIGGER insert_classes AFTER insert ON Classes
 FOR EACH ROW BEGIN
insert into insert_tracking_classes (classID, Title, classDesc, Category, isEvent, picLeft, picTop, picRight, picBottom, prnColor, modified)
values(NEW.classID, NEW.Title, NEW.classDesc, NEW.Category, NEW.isEvent, NEW.picLeft, NEW.picTop, NEW.picRight, NEW.picBottom, NEW.prnColor, NOW());
 END$$
 DELIMITER ;

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错误

    SQL query:

    DELIMITER $$ CREATE TRIGGER insert_classes AFTER INSERT ON Classes
    FOR EACH
    ROW BEGIN
    INSERT INTO insert_tracking_classes( classID, Title, classDesc, Category, isEvent, picLeft, picTop, picRight, picBottom, prnColor, modified )
    VALUES (
-->     NEW.classID, NEW.Title, NEW.classDesc, NEW.Category, NEW.isEvent, NEW.picLeft, NEW.picTop, NEW.picRight, NEW.picBottom, NEW.prnColor, NOW( )
    );

    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 'DELIMITER $$
         CREATE TRIGGER insert_classes AFTER insert ON Classes
         F' at line 1 

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我的表格

CREATE TABLE insert_tracking_classes (  --- Same table layout for Classes table minus Modified time and tracking_id
  tracking_id int(11) NOT NULL AUTO_INCREMENT,
  classID int(11) NOT NULL,
  Title varchar(48) NOT NULL,
  classDesc text,
  Category varchar(128) default NULL,
  isEvent int(8) default NULL,
  picLeft int(8) default NULL,
  picTop int(8) default NULL,
  picRight int(8) default NULL,
  picBottom int(8) default NULL,
  prnColor varchar(4) default NULL,
  modified datetime NOT NULL,
  PRIMARY KEY (tracking_id)
);

更新:尝试使用静态值并删除 if 和 modified = NOW() 语句而不做任何更改。

Answer 1

必须删除定界符、开始和结束语句。

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回答

DROP TRIGGER IF EXISTS insert_classes;
CREATE TRIGGER insert_classes AFTER insert ON Classes
FOR EACH ROW
insert into tracking_classes (command, classID, Title, classDesc, Category, isEvent, picLeft, picTop, picRight, picBottom, prnColor, modified)
values('insert', NEW.classID, NEW.Title, NEW.Desc, NEW.Category, NEW.isEvent, NEW.picLeft, NEW.picTop, NEW.picRight, NEW.picBottom, NEW.prnColor, NOW());