alasql/test/test115.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('..');
	var zt = require('../lib/zt/zt.js');
};

describe('Test 115 - CROSS and NATURAL JOINS', function() {

	it('Create first table with default values', function(done) {
		alasql('create database test115');
		alasql('use test115');
		alasql('create table one (a int, b int, c int)');
		for(var i=0; i<100; i++) {
			alasql('insert into one values (?,?,?)', [i,i*10, i*100]);	
		}
		var res = alasql('select value count(*) from one');
		assert(res == 100);
		done();		
	});

	it('Create second table with default values', function(done) {
		alasql('create table two (b int, c int, d int)');
		for(var i=0; i<100; i++) {
			alasql('insert into two values (?,?,?)', [i*10,i*100, i%5]);	
		}
		var res = alasql('select value count(*) from two');
		assert(res == 100);
		done();		
	});

	it('Cross join - FROM form', function(done) {
		var res = alasql('select * from one cross join two');
//		console.log(res.length);
		assert(res.length == 10000); // cross join gives 1000000
		done();		
	});

	it('Cross join - JOIN form', function(done) {
		var res = alasql('select * from one, two');
//		console.log(res.length);
		assert(res.length == 10000); // cross join gives 1000000
		done();		
	});

	it('Natural join', function(done) {
		var res = alasql('select * from one natural join two');
//		console.log(res.length);
		assert(res.length == 100); // cross join gives 1000000
		done();		
	});

	it('Natural left join', function(done) {
		var res = alasql('select * from one natural left outer join two');
//		console.log(res.length);
		assert(res.length == 100); // cross join gives 1000000
		done();		
	});

});