今天工作需要,想要實現將僅對狀態更新的表進行歷史記錄顯示,于是考慮在原表中建立觸發器,將更新的內容同時寫入另一張表
于是進行測試
--建立測試表CREATE TABLE `triggletest_triggle` (`id` INT(11) NOT NULL,`name` VARCHAR(5) NULL DEFAULT NULL,PRIMARY KEY (`id`))COLLATE='latin1_swedish_ci'ENGINE=InnoDB --建立目標表CREATE TABLE `triggletest` (`seq` INT(11) NOT NULL,`id` INT(11) NOT NULL,`name` VARCHAR(5) NULL DEFAULT NULL,PRIMARY KEY (`seq`),INDEX `id` (`id`))COLLATE='latin1_swedish_ci'ENGINE=InnoDB; ---寫入測試數據INSERT INTO `triggletest_triggle` VALUES(1,'A'); --建立觸發器DROP TRIGGER if EXISTS test1CREATE TRIGGER test1 AFTER UPDATE ON triggletest_triggleFOR EACH ROWBEGININSERT INTO triggletest(id) values (new.id);END
執行觸發器語句,報錯,報錯內容如下:
/* SQL錯誤(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 'CREATE TRIGGER test1 AFTER UPDATE ON triggletest_triggleFOR EACH ROWBEGIN ' at line 2 */---最終實現代碼DROP TRIGGER if EXISTS test1;CREATE TRIGGER test1 AFTER UPDATE ON test.triggletest_triggle FOR EACH ROWBEGININSERT INTO triggletest(id,name) values (new.id,new.name);END;
分析,由于訪問工具HediSQL,導致無法正常創建觸發器,相同語句,在HediSQL中執行,報錯,使用shell調用mysql,直接執行程序,成功。
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