Your query is extreme. Hundreds of joins, dozens of nested selects. Way too big, and way too complicated. You'll never get any decent performance with a query like that, nor will you ever be able to analyse and understand the reasons for the performance problems.
The solution to your problem is to redesign your database. Read up on database normalisation. If you need ad hoc, complicated queries, first load your data from your normal schema into a star schema as described in database warehouse textbooks. -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to h2-database+unsubscr...@googlegroups.com. To post to this group, send email to h2-database@googlegroups.com. Visit this group at https://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.
