今天工作需要,想要實(shí)現(xiàn)將僅對(duì)狀態(tài)更新的表進(jìn)行歷史記錄顯示,于是考慮在原表中建立觸發(fā)器,將更新的內(nèi)容同時(shí)寫入另一張表
于是進(jìn)行測(cè)試
--建立測(cè)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(biāo)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(cè)試數(shù)據(jù)INSERT INTO `triggletest_triggle` VALUES(1,'A'); --建立觸發(fā)器DROP TRIGGER if EXISTS test1CREATE TRIGGER test1 AFTER UPDATE ON triggletest_triggleFOR EACH ROWBEGININSERT INTO triggletest(id) values (new.id);END
執(zhí)行觸發(fā)器語句,報(bào)錯(cuò),報(bào)錯(cuò)內(nèi)容如下:
/* SQL錯(cuò)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(shí)現(xiàn)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(dǎo)致無法正常創(chuàng)建觸發(fā)器,相同語句,在HediSQL中執(zhí)行,報(bào)錯(cuò),使用shell調(diào)用mysql,直接執(zhí)行程序,成功。
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