Hi,
This query:
select c.id_currency,max(p.modified_on) from currency c left join
price_line p using (id_currency) where p.id_line=1 group by
c.id_currency;
doesn't list all c.id_currency's, only those with a price_line. However
this one does:
select c.id_currency,max(p.modified_on) from currency c left join
price_line p on (p.id_currency = c.id_currency and p.id_line=1) group by
c.id_currency;
How come?
Thanks,