alasql/test/test177.js

AlaSQL.js - JavaScript SQL database library for relational and graph data manipulation with support of localStorage, IndexedDB, and Excel

if(typeof exports === 'object') {
	var assert = require("assert");
	var alasql = require('..');
} else {
	__dirname = '.';
};



//if(typeof exports != 'object') {

describe('Test 177 - AVG', function() {

  var data = [{a:1},{a:2},{a:3}];

	it("1. AVG", function(done) {
		var res = alasql('SELECT COUNT(*) AS cnt, SUM(a) AS sm FROM ?',[data]);
    assert(2 == res[0].sm/res[0].cnt);
    done();
  });

  it("2. AVG", function(done) {
    var res = alasql('SELECT VALUE AVG(a) FROM ?',[data]);
//    console.log(2, res);
    assert(res == 2);
    done();
  });

if(false) {
  it("3. AGGR", function(done) {
    var res = alasql('SELECT COUNT(*) AS cnt, SUM(a) AS sm, AGGR(sm/cnt) AS av FROM ?',[data]);
//    var res = alasql('SELECT COUNT(*) AS cnt, SUM(a) AS sm, AGGR(COUNT(*)/SUM(a)) AS av FROM ?',[data]);
    console.log(3, res);
    assert(2 == res[0].av)
    done();
  });
}
});