On Wed, Mar 1, 2017 at 3:00 PM, Stefan Andreatta <s(dot)andreatta(at)synedra(dot)com>
wrote:
> plain analyze
> select tmp_san_1.id
> from tmp_san_1
> left join tmp_san_2 on tmp_san_1.text = tmp_san_2.text
> where tmp_san_2.id is null;
>
> Does it help if you check for "tmp_san_2.text is null"?
David J.