Hi!
Separate the product code and size into two columns --- if there's somebody who really wants to see them in the above format, give them a view or generated column. Then instead of the impossible-to-optimize queries you showed, you could do something like select toode.toode , n2, n3, n4 from toode, vordlusajuhinnak where toode.toode = vordlusajuhinnak.toode;
Can function index
create index on toode ( split_part( toode, '/',1) )
and query
select toode.toode , n2, n3, n4
from toode, vordlusajuhinnak
where split_part( toode.toode, '/',1) = vordlusajuhinnak.toode;
used and keeping existing table structure? Functional index should produce same speed improvement as using separate column?
Andrus.
