PSQL 服务器，'relation does not exist' 通过 Postman 发送请求时

Question

我有一个非常基本的sql文件，代码：

\c postgres
DROP DATABASE IF EXISTS project1;
CREATE DATABASE project1;
\c parky

CREATE TABLE works (
    id SERIAL PRIMARY KEY,
    workshop TEXT NOT NULL,
    attendee TEXT NOT NULL
);

这是我的 Javascript 服务器使用的：

require('dotenv').config()
const bodyParser = require("body-parser");
const express = require("express");
const app = express();

app.set("port", 8080);

app.use(bodyParser.json({ type: "application/json" }));
app.use(bodyParser.urlencoded({ extended: true }));

const Pool = require("pg").Pool;
const config = {
    host: process.env.DB_HOST,
    user: process.env.DB_USER,
    password: process.env.DB_PASS,
    database: "project1"
};
const pool = new Pool(config);

//Add an attendee to workshop
app.post("/api", async (req, res) => {
  const ws = req.body.workshop;
  const att = req.body.attendee;

  try{
    const template = "SELECT * from works WHERE workshop =  AND attendee = ";
     console.log("in the select statement");
    const response = await pool.query(template, [ws, att]);
   
    //if attendee and workshop already exists
    if(response.rowCount != 0){
        res.json({status: "attendee already enrolled"});
    
    } else if (response.rowCount ==0){
    //else if attendee and workshop doesn't exist
    //INSERT the entry
        const template2 = "INSERT INTO works(workshop, attendee) VALUES (, )";
        console.log("in the insert statement");
        const response1 = await pool.query(template2,  [ws, att]);
    res.json({status: "added"});
    }
    
    }catch (err){
        console.log("Error.")
        console.log(err);
    }
    })
app.listen(app.get("port"), () => {
  console.log(`Find the server at: http://localhost:${app.get("port")}/`); 
});

通过 Postman 传递的密钥是：

workshop  : React Fundamentals
attendee  : Claire Kim

但每次我尝试将这些值插入 table 时，我都会收到此错误：

error: relation "works" does not exist

参考线：

    const template = "SELECT * from works WHERE workshop =  AND attendee = ";
     console.log("in the select statement");
    const response = await pool.query(template, [ws, att]);

但是在 PSQL 中，当我输入 select 语句时，它工作正常并且 table“有效”。我的用户 'parky' 有权 select 并插入到“works”，还可以使用 select 按 works_id_seq table.

我已经为此工作了 6 个小时，但不知道出了什么问题。任何见解将不胜感激。

Answer 1

如果那是您用来创建 table 的实际 SQL 文件，那么您在名为 parky 的数据库中创建了 table。

\c parky 的输出应该是这样的：

You are now connected to database "parky" as user "postgres"

那一行应该是这样的： \c project1 parky

PSQL 服务器，'relation does not exist' 通过 Postman 发送请求时

PSQL server, 'relation does not exist' when sending a request through Postman

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