Trigger to track changes in MySQL Database

那年仲夏 提交于 2020-01-02 04:04:50

问题


I cannot seem to create a trigger. I have tried it the two ways below for the update. I keep getting a syntax error with the insert statement. I have searched forums and web searches for the past 4 hrs with no change. There is alot more code to this, It basically repeats itself. Any help would be appreciated. Thank You. I am running MySQL 5.0 and acessing via phpMyAdmin 2.8.2.4 as Administrator/Root.


TRY 1 (with and without qoutes on all fields and names)

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;

ERROR

 #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)

TRY 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 ;

ERROR

    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 

My Tables

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)
);

Update: Have tried to use static values and removing the if and modified = NOW() statements with no change.


回答1:


Had to remove Delimiter, Begin, and End statements.


ANSWER

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());


来源:https://stackoverflow.com/questions/4289502/trigger-to-track-changes-in-mysql-database

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!