alasql/test/test021.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('..');
};

describe('Test 21', function() {
	it('Aggregators', function(done){

	var db = new alasql.Database("db");
		db.exec('CREATE TABLE test (a int, b int)');
		db.exec('INSERT INTO test VALUES (1,1)');
		db.exec('INSERT INTO test VALUES (2,1)');
		db.exec('INSERT INTO test VALUES (3,1)');
		db.exec('INSERT INTO test VALUES (4,2)');
		db.exec('INSERT INTO test VALUES (5,2)');
		db.exec('INSERT INTO test VALUES (6,2)');
		
	 	var res = db.exec('SELECT b, SUM(a), COUNT(a), FIRST(a), LAST(a) FROM test GROUP BY b');
		assert.deepEqual([ { b: 1,
		    'SUM(a)': 6,
		    'COUNT(a)': 3,
		    'FIRST(a)': 1,
		    'LAST(a)': 3,
		    },
		  { b: 2,
		    'SUM(a)': 15,
		    'COUNT(a)': 3,
		    'FIRST(a)': 4,
		    'LAST(a)': 6,
		    } 
		   ], res);
		done();
	});
});