Easy to use!
Add alasql.js library to your page:
<script src="alasql.js"></script>
<script>
alasql("CREATE TABLE test (language INT, hello STRING)");
alasql("INSERT INTO test VALUES (1,'Hello!')");
alasql("INSERT INTO test VALUES (2,'Aloha!')");
alasql("INSERT INTO test VALUES (3,'Bonjour!')");
console.log( alasql("SELECT * FROM test WHERE language > 1") );
</script>