使用SQL中的现有标头创建新标头

Question

我有一个查询，我必须找到GPA高于3.5的那个学生的名字和姓氏。可以按照以下步骤进行操作：

select first name, last name 
from Students 
where GPA > 3.5;

但是我需要创建一个新的标题列“ name”，其中将名字和姓氏（两者之间有一个空格）结合在一起。如何创建新的标题字段？

Answer 1

const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const logger = require('morgan');
const cors = require('cors');
const passport = require('passport');
const errorMiddleware = require('./middleware/error');
const config = require('./config');

const uploadRoutes = require('./routes/upload');                                                      

// initialize the app
const app = express();

// middleware
app.use(cors('http://localhost:4200/'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

// static folder
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, '/angular-src/src/assets/img')));
app.use(`${config.root}/upload`, uploadRoutes);                             


module.exports = app;

或

select concat(`first name`, " ", `last name`) as name
from Students 
where GPA > 3.5;

Answer 2

示例：

   USE AdventureWorks2012 
    Select FirstName,LastName,(FirstName+' '+ LastName) As [Name] from Person.Person

或

    Select FirstName,LastName,concat(firstname,' ', lastname) as name
    from Person.Person

您将获得相同的结果

回到查询

    Select first name, last name ,(FirstName+' '+ LastName) As [Name] 
    From Students 
    Where GPA > 3.5;