alasql/test/test254.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 = '.';
};


describe('Test 254 UNION of two tables with different columns', function() {

  it('1. Create database', function(done){
    alasql('CREATE DATABASE test254;USE test254');
    alasql('CREATE TABLE t1(a int,b int);  \
            INSERT INTO t1 VALUES(1,1);  \
            INSERT INTO t1 VALUES(1,2);  \
            INSERT INTO t1 VALUES(1,3);  \
            CREATE TABLE t2(a int,b int);  \
            INSERT INTO t2 VALUES(1,2);  \
            INSERT INTO t2 VALUES(1,5);  \
      ');
    done();
  });

  it('2. UNION ALL CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 UNION ALL CORRESPONDING SELECT b, a FROM t1');    
    assert.deepEqual(res,
      [ { a: 1, b: 1 },
        { a: 1, b: 2 },
        { a: 1, b: 3 },
        { b: 1, a: 1 },
        { b: 2, a: 1 },
        { b: 3, a: 1 } ]
    );
    done();
  });

  it('3. UNION ALL not CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 UNION ALL SELECT b, a FROM t1');    
    assert.deepEqual(res,
      [ { a: 1, b: 1 },
        { a: 1, b: 2 },
        { a: 1, b: 3 },
        { a: 1, b: 1 },
        { a: 2, b: 1 },
        { a: 3, b: 1 } ]
    );
    done();
  });

  it('4. UNION CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 UNION CORRESPONDING SELECT b, a FROM t1');    
    assert.deepEqual(res,
      [ { a: 1, b: 1 },
        { a: 1, b: 2 },
        { a: 1, b: 3 } ]
    );
    done();
  });

  it('5. UNION non CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 UNION SELECT b, a FROM t1');    
    assert.deepEqual(res,
      [ { a: 1, b: 1 },
        { a: 2, b: 1 },
        { a: 3, b: 1 },
        { a: 1, b: 2 },
        { a: 1, b: 3 }, ]
    );
    done();
  });

  it('6. INTERSECT CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 INTERSECT CORRESPONDING SELECT b, a FROM t1');    
//    console.log(res);
    assert.deepEqual(res,
      [ { a: 1, b: 1 },
        { a: 1, b: 2 },
        { a: 1, b: 3 } ]
    );
    done();
  });

  it('7. INTERSECT non CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 INTERSECT SELECT b, a FROM t1');    
//    console.log(res);
    assert.deepEqual(res,
      [ { a: 1, b: 1 } ]
    );
    done();
  });

  it('8. EXCEPT CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 EXCEPT CORRESPONDING SELECT b, a FROM t1');    
//    console.log(res);
    assert.deepEqual(res,
      []
    );
    done();
  });

  it('9. EXCEPT non CORRESPONDING',function(done) {
    var res = alasql('SELECT a, b FROM t1 EXCEPT SELECT b, a FROM t1');    
//    console.log(res);
    assert.deepEqual(res,
      [ { a: 1, b: 2 },
        { a: 1, b: 3 },
       ]
    );
    done();
  });



  it('99. Drop database',function(done){
    alasql('DROP DATABASE test254');
    done();
  });

});