Currently, all QueryPartLists, and specifically the SortFieldList are initialised eagerly, allocating the Object[] in their backing array lists. This isn't always needed - e.g. when we're not using an ORDER BY clause, we shouldn't allocate the SortFieldLists's backing array.

If this is improved, we can further remove pressure from the GC. In high throughput benchmarks, improving this accounts for 2% - 3%, which isn't much, but still worth the non-intrusive, trivial change.

This is a finding from analyses made after a third-party benchmark comparing jOOQ with JDBC, Hibernate, Spring Data:
https://github.com/nithril/sandbox-query-benchmark-jooq-hibernate-jdbc