chdb/example.js

chDB bindings for nodejs

const { query, Session } = require(".");

var ret;

// Test standalone query
ret = query("SELECT version(), 'Hello chDB', chdb()", "CSV");
console.log("Standalone Query Result:", ret);

// Test session query
// Create a new session instance
const session = new Session("./chdb-node-tmp");
ret = session.query("SELECT 123", "CSV")
console.log("Session Query Result:", ret);
ret = session.query("CREATE DATABASE IF NOT EXISTS testdb;" +
    "CREATE TABLE IF NOT EXISTS testdb.testtable (id UInt32) ENGINE = MergeTree() ORDER BY id;");

session.query("USE testdb; INSERT INTO testtable VALUES (1), (2), (3);")

ret = session.query("SELECT * FROM testtable;")
console.log("Session Query Result:", ret);

// Test error handling
try {
    session.query("SELECT * FROM non_existent_table;", "CSV");
}
catch (e) {
    console.log("Error:", e.message);
}

// Clean up the session
session.cleanup();