wqlmx的博客

一、数据库drop table if exists account;create table account(accountNo varchar(19) primary key,accountName varchar(10) not null,accountMoney decimal(12,2) not null);insert into account(accountNo,acco...

一、数据准备1. student表drop table if exists student; create table student ( studentNo varchar(10), studentName varchar(10), studentAge varchar(3), studentSex varchar(1), primary key(studen...