Error in SQLite3 foreigin or foreign
<p>I created a db in sqlite3 version 3.9.2, and if I add a new field on table, return syntax error. ex:</p>

<pre><code>alter table table_01 add column tab_2 integer foreign key references table_02(id);
// this command return syntax error.
alter table table_01 add column tab_2 integer foreigin key references table_02(id);
// and this return success.
</code></pre>

<p>can someone say why this?</p>