How to drop a database in postgres sql using node.js? - node.js

Question

I am trying to drop a database called test from node.js postgres sql but it is not working.
var express = require('express');
var app = express();
var pg = require('pg');
var pgp = require('pg-promise')();
// Connect to PostgreSQL database
var connectionString = process.env.DATABASE_URL || 'postgres://postgres:pass123#localhost:5432/test';
var db = pgp(connectionString);
db.connect();
db.query("DROP DATABASE test").then(function()
{
//createDatabases(db);
}).catch(function(err)
{
console.log(err);
});
But I am getting an error
{ [error: cannot drop the currently open database]
name: 'error',
length: 87,
severity: 'ERROR',
code: '55006',
detail: undefined,
hint: undefined,
position: undefined,
internalPosition: undefined,
internalQuery: undefined,
where: undefined,
schema: undefined,
table: undefined,
column: undefined,
dataType: undefined,
constraint: undefined,
file: 'dbcommands.c',
line: '834',
routine: 'dropdb' }
Does anyone know how to fix it?
Thanks

Answer 1

As the error says, you can't be connected to the DB in question to drop it. You can connect to a different DB in order to do so, or use a tool like pgtools
var pgtools = require('pgtools');
// This can also be a connection string
// (in which case the database part is ignored and replaced with postgres)
const config = {
user: 'postgres',
password: 'some pass',
port: 5432,
host: 'localhost'
}
pgtools.dropdb(config, 'test-db', function (err, res) {
if (err) {
console.error(err);
process.exit(-1);
}
console.log(res);
});