alasql/test/test010.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 10', function() {
	it('Test JOIN ON variations', function(done){

		alasql.exec('DROP TABLE IF EXISTS test1');
		alasql.exec('DROP TABLE IF EXISTS test2');

		alasql.exec('CREATE TABLE test1 (a int, b int, c int)');
		alasql.exec('INSERT INTO test1 VALUES (1,10,1)');
		alasql.exec('INSERT INTO test1 VALUES (1,20,2)');
		alasql.exec('INSERT INTO test1 VALUES (2,30,2)');
		alasql.exec('INSERT INTO test1 VALUES (3,40,3)');

		alasql.exec('CREATE TABLE test2 (a int, c int, d int)');
		alasql.exec('INSERT INTO test2 VALUES (1,1,100)');
		alasql.exec('INSERT INTO test2 VALUES (2,2,200)');

		var res = alasql.exec('SELECT test1.a AS a1, test2.a AS a2 '+
				' FROM test1 JOIN test2 ON test1.a=test2.a-1');
		assert.deepEqual([ { a1: 1, a2: 2 }, { a1: 1, a2: 2 } ], res);

		var res = alasql.exec('SELECT test1.a AS a1, test2.a AS a2 '+
				' FROM test1 JOIN test2 ON test2.a=test1.a+1');
		assert.deepEqual([ { a1: 1, a2: 2 }, { a1: 1, a2: 2 } ], res);

		var res = alasql.exec('SELECT test1.a AS a1, test2.a AS a2 '+
				' FROM test1 JOIN test2 ON test2.a-test1.a=1');
		assert.deepEqual([ { a1: 1, a2: 2 }, { a1: 1, a2: 2 } ], res);

		var res = alasql.exec('SELECT test1.a AS a1, test2.a AS a2 '+
				' FROM test1 JOIN test2 ON 1=test2.a-test1.a');
		assert.deepEqual([ { a1: 1, a2: 2 }, { a1: 1, a2: 2 } ], res);


		var res = alasql.exec('SELECT test1.b, test2.d FROM test1 '+
			' JOIN test2 ON test1.a = test2.a AND test1.c = test2.c');
		assert.deepEqual([ { b: 10, d: 100 }, { b: 30, d: 200 } ], res);

		var res = alasql.exec('SELECT test1.b, test2.d FROM test1 JOIN test2 USING a,c');
		assert.deepEqual([ { b: 10, d: 100 }, { b: 30, d: 200 } ], res);
		done();
	});
});