mysql – 加速或自动创建历史表触发器

2023年4月20日 249次阅读

是否有任何有用的工具或技巧可以自动(或快速)为
MySQL中的给定表创建历史表触发器？
I’ve come across this tool so far,但它暂时没有更新.如果它是相关的,我使用MySQL Workbench的“模型”工具来构建我的数据库模型,然后将它们与我的本地数据库同步.

我想要的是能够为表提供创建脚本,并让工具神奇地吐出创建历史表和触发器的脚本,以插入到插入/更新/删除的历史表中.例如,如果我有具有复合PK a,b,外键c,d和属性e,f的表foo,它将为具有复合PK a,b,revisionNum和c,d的历史表foo_history生成创建脚本. ,e,f,从c和d中删除关系 – 可能还有一个列,表示操作的时间以及是否为INSERT / UPDATE / DELETE.

我很乐意制作这样一个脚本并分享它,如果它还不存在,但我不想重新发明轮子.如果没有,您认为其他人使用此类脚本最方便的格式是什么？您将如何将其纳入您的模型开发工作流程？

最佳答案 我为自己创建了这个小怪物php脚本,它从一些简写的txt文件生成SQL DDL,现在它可以生成历史表及其CREATE TRIGGER语句.

http://simpleddl.coolpage.biz/

示例来源：

// ZZZ means "Create History Table + Triggers"
// you can try editing it live at the link above

!DROP
= ID id P AI

person ZZZ
  ID
  name _
  N mother_id -> person
  N father_id -> person
  !FK mother_id, father_id -> family

family ZZZ
  P female_id -> person
  P male_id   -> person

生成的SQL DDL：

DROP   TABLE IF     EXISTS person;
CREATE TABLE IF NOT EXISTS person (
   id         INT NOT NULL AUTO_INCREMENT,
   name       VARCHAR(255) NOT NULL,
   mother_id  INT NULL,
   father_id  INT NULL,
   PRIMARY KEY ( id ),
   FOREIGN KEY ( mother_id ) REFERENCES person( id ),
   FOREIGN KEY ( father_id ) REFERENCES person( id ),
   FOREIGN KEY ( mother_id, father_id ) REFERENCES family( female_id, male_id )
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;

DROP   TABLE IF     EXISTS family;
CREATE TABLE IF NOT EXISTS family (
   female_id  INT NOT NULL,
   male_id    INT NOT NULL,
   PRIMARY KEY ( female_id, male_id ),
   FOREIGN KEY ( female_id ) REFERENCES person( id ),
   FOREIGN KEY ( male_id ) REFERENCES person( id )
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

DROP   TABLE IF     EXISTS zz_person;
CREATE TABLE IF NOT EXISTS zz_person (
   id         INT NOT NULL,
   name       VARCHAR(255) NOT NULL,
   mother_id  INT NULL,
   father_id  INT NULL,
   _zz_id     INT NOT NULL AUTO_INCREMENT,
   _zz_op     CHAR(1) NOT NULL,
   _zz_date   datetime NOT NULL,
   PRIMARY KEY ( _zz_id ),
   INDEX P ( id ),
   INDEX ( father_id, mother_id ),
   INDEX ( _zz_op ),
   INDEX ( _zz_date )
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;

DROP   TABLE IF     EXISTS zz_family;
CREATE TABLE IF NOT EXISTS zz_family (
   female_id  INT NOT NULL,
   male_id    INT NOT NULL,
   _zz_id     INT NOT NULL AUTO_INCREMENT,
   _zz_op     CHAR(1) NOT NULL,
   _zz_date   datetime NOT NULL,
   PRIMARY KEY ( _zz_id ),
   INDEX P ( male_id, female_id ),
   INDEX ( _zz_op ),
   INDEX ( _zz_date )
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;


DROP   TRIGGER IF EXISTS INSERT_ON_person;
CREATE TRIGGER           INSERT_ON_person
                   AFTER INSERT ON person
FOR EACH ROW INSERT INTO
zz_person (     id,     name,     mother_id,     father_id, _zz_date, _zz_op )
   VALUES ( NEW.id, NEW.name, NEW.mother_id, NEW.father_id,  NOW()  ,  'i'   );

DROP   TRIGGER IF EXISTS UPDATE_ON_person;
CREATE TRIGGER           UPDATE_ON_person
                   AFTER UPDATE ON person
FOR EACH ROW INSERT INTO
zz_person (     id,     name,     mother_id,     father_id, _zz_date, _zz_op )
   VALUES ( NEW.id, NEW.name, NEW.mother_id, NEW.father_id,  NOW()  ,  'u'   );

DROP   TRIGGER IF EXISTS DELETE_ON_person;
CREATE TRIGGER           DELETE_ON_person
                   AFTER DELETE ON person
FOR EACH ROW INSERT INTO
zz_person (     id,     name,     mother_id,     father_id, _zz_date, _zz_op )
   VALUES ( OLD.id, OLD.name, OLD.mother_id, OLD.father_id,  NOW()  ,  'd'   );

DROP   TRIGGER IF EXISTS INSERT_ON_family;
CREATE TRIGGER           INSERT_ON_family
                   AFTER INSERT ON family
FOR EACH ROW INSERT INTO
zz_family (     female_id,     male_id, _zz_date, _zz_op )
   VALUES ( NEW.female_id, NEW.male_id,  NOW()  ,  'i'   );

DROP   TRIGGER IF EXISTS UPDATE_ON_family;
CREATE TRIGGER           UPDATE_ON_family
                   AFTER UPDATE ON family
FOR EACH ROW INSERT INTO
zz_family (     female_id,     male_id, _zz_date, _zz_op )
   VALUES ( NEW.female_id, NEW.male_id,  NOW()  ,  'u'   );

DROP   TRIGGER IF EXISTS DELETE_ON_family;
CREATE TRIGGER           DELETE_ON_family
                   AFTER DELETE ON family
FOR EACH ROW INSERT INTO
zz_family (     female_id,     male_id, _zz_date, _zz_op )
   VALUES ( OLD.female_id, OLD.male_id,  NOW()  ,  'd'   );

测试小提琴：

http://sqlfiddle.com/#!2/d05e6/1

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