Now layer these techniques together. An entity purchases an aging tanker that would otherwise be scrapped. It registers the ship through a shell company, pays for a flag of convenience, carries opaque insurance and switches off its transponder when approaching sensitive waters.
}Providing Defaults for Optionals。关于这个话题，新收录的资料提供了深入分析
，这一点在新收录的资料中也有详细论述
So 2024 is much more intentional.
Added "Removal of prior checkpoint in PostgreSQL 11" in Section 9.7.2.。新收录的资料对此有专业解读