JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://alasql.org/console/alasql.min.js"></script>
<span id="res"></span>
JavaScript
var data = [{a:1, b:100},{a:2, b:90},{a:3, b:80},
{a:4, b:70},{a:5, b:60},{a:6, b:50},
{a:7, b:40},{a:8, b:30},{a:9, b:20},
{a:10, b:10}];
var res = alasql('SELECT COUNT(*), SUM(a), AVG(a),\
SUM(b), AVG(b) FROM ?',[data]);
document.getElementById("res").textContent = JSON.stringify(res);