Oops! Encountered a NeonDbError 42P07 while trying to configure NextJS DB with Vercel Postgres

After diligently following the guidelines provided by Vercel for setting up Postgres, I encountered an issue when testing my endpoint:

{
  error: {
    name: "NeonDbError",
    code: "42P07"
  }
}

Below is the code snippet of my endpoint:

import { NextResponse } from "next/server";
import { sql } from '@vercel/postgres';

export async function GET() {
    try {
        const result =
            await sql`CREATE TABLE Pets ( Name varchar(255), Owner varchar(255) );`;
        return NextResponse.json({ result });
    } catch (error) {
        return NextResponse.json({ error }, { status: 500 });
    }
}

In addition, I have configured all necessary variables in my .env.development.local file.

Answer №1

The error code indicates that the table already exists, preventing it from being created again

You can use the existing table as is, or delete it first if necessary:

await sql`DROP TABLE Pets;`;

To view a list of current tables:

const listTables = async () => sql`
    SELECT table_name
        FROM information_schema.tables
        WHERE table_schema = 'public'
        AND table_type = 'BASE TABLE';
`;

const results = await listTables();

console.log(results);

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