snowflake-promise

snowflake-promise

A Promise-based interface to your Snowflake data warehouse.

This is a wrapper for the Snowflake SDK for Node.js. It provides a Promise-based API instead of the core callback-based API.

Installation

• npm i snowflake-promise

Basic usage

const Snowflake = require('snowflake-promise').Snowflake;
// or, for TypeScript:
import { Snowflake } from 'snowflake-promise';

async function main() {
  const snowflake = new Snowflake({
    account: '<account name>',
    username: '<username>',
    password: '<password>',
    database: 'SNOWFLAKE_SAMPLE_DATA',
    schema: 'TPCH_SF1',
    warehouse: 'DEMO_WH'
  });

  await snowflake.connect();

  const rows = await snowflake.execute(
    'SELECT COUNT(*) FROM CUSTOMER WHERE C_MKTSEGMENT=:1',
    ['AUTOMOBILE']
  );

  console.log(rows);
}

main();

Connecting

The constructor takes up to three arguments:

new Snowflake(connectionOptions, [ loggingOptions, [ configureOptions ] ])

• connectionOptions
  • Supported options are here: https://docs.snowflake.net/manuals/user-guide/nodejs-driver-use.html#required-connection-options
• loggingOptions
  • logSql (optional, function): If provided, this function will be called to log SQL statements. For example, set logSql to console.log to log all issued SQL statements to the console.
  • logLevel (optional: 'error' | 'warn' | 'debug' | 'info' | 'trace'): Turns on SDK-level logging.
• configureOptions
  • ocspFailOpen (optional, boolean) (default: true): Enables OCSP fail-open functionality. See https://www.snowflake.com/blog/latest-changes-to-how-snowflake-handles-ocsp/ for more information.

More examples

• Streaming result rows
• Using traditional Promise then syntax (and older versions of Node.js)
  • Node v6.9.5 is the oldest supported version
• Turn on logging