Metabolomics and Transcription Profiling of Pumpkin Fruit Reveals Enhanced Bioactive Flavonoids and Coumarins in Giant Pumpkin (Cucurbita maxima)
笋瓜果实的代谢组学和转录组分析揭示了笋瓜(Cucurbita maxima)中生物活性黄酮和香豆素的增强 …
1.组合两个表(外连接) select p.firstName,p.lastName,a.city,a.state
from Person p left join Address a
on p.personId a.personId; 以左边表为基准,去连接右边的表。取两表的交集和左表的全集 2.第二高的薪水 (子查询、if…