...部分引用列值: INSERT INTO table (a,b,c) VALUES (1,2,3),(4,5,6) ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b); 插入多行情况...VALUES (1,2,3),(4,5,6) ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b); REPLACE INTO REPLACE INTO 则会先删除数据...,然后再插入。
name, weight FROM ${tableName}`)// 新增const name = 'Niko'const weight = 70await connection.query(` INSERT INTO ${tableName} (name, weight) VALUES ('${name}', ${weight})`)/
insert into table_name [(column [, column ...])] select ... 1. 案例: 创建一张用户表,设计有name姓名、email邮箱、sex性别、mobile手机号字段。需要把已有的学生数据复制进来,可以复制的字段为name、qq_mail -- 创建用户表 drop table if exists test_user; create table test_user ( id int primary...
constconnection = mysql.createConnection({})consttableName ='animal'connection.connect()// 我们假设已经支持了Promise// 查询const[results] =awaitconnection.query(` SELECT id, name, weight FROM${tableName}`)// 新增constname ='Niko'constweight =70awaitconnection.query(` INSERT INTO${tableName}(n...
create table stu(id int primary key auto_increment,name char(10),math float,english float); insert into stu values(null,"赵云",90,30); insert into stu values(null,"小乔",90,60); insert into stu values(null,"小乔",90,60);
CURD示例 async function createRow() { const user = await User.create({ name: "Jane", age: 23 }); // INSERT INTO `table_user` (`id`,`name`,`age`) VALUES (DEFAULT,?,?); console.log(user.toJSON()); // { id: 8, name: 'Jane', age: 23 }}async function selectRow() { con...
migrations目录下生成了一个文件,名字带有时间戳。它有两个方法,up(…) 用来定义migration要做的事情,down(…) 回滚这个migration做的事情,所以要在up中创建table,在down中删除table。需要注意的是,Sequelize默认会为Model增加id,createdAt和updatedAt属性,所以创建表时,表也要有对应的列...
(default): DROP TABLE IF EXISTS "jts" CASCADE;Executing (default): DROP TABLE IF EXISTS "jts" CASCADE;Executing (default): CREATE TABLE IF NOT EXISTS "jts" ("id" SERIAL , "publish" BOOLEAN, "retry" INTEGER, "updatedAt" TIMESTAMP WITH TIME ZONE, PRIMARY KEY ("id"));...
async function createRow() { const user = await User.create({ name: "Jane", age: 23 }); // INSERT INTO `table_user` (`id`,`name`,`age`) VALUES (DEFAULT,?,?); console.log(user.toJSON()); // { id: 8, name: 'Jane', age: 23 } } async function selectRow() { const use...
INSERT INTO ${tableName} (name, weight) VALUES ('${name}', ${weight}) `) // 或者通过传入一个Object的方式也可以做到 await connection.query(`INSERT INTO ${tableName} SET ?`, { name, weight }) connection.end() 看起来也还算是比较清晰,但是这样带来的问题就是,开发人员需要对表结构足够的...