On 6/2/2016 11:10 AM, Steve Clark wrote:
Thanks all the below seem to do the trick.
On 06/02/2016 01:58 PM, David G. Johnston wrote:
select max(id) from yourtable where sts=0 and id not in (select ref_id from yourtable);
select max(id) from yourtable where sts=0 and id not in (select ref_id from yourtable);
do note, this is whats known as an 'anti-join', and these can be pretty expensive on large tables.
--
john r pierce, recycling bits in santa cruz