与复杂类型有关的查询中以集合体为值的属性
例
select title
from books
where 'database' in (unnest(keyword-set))其中(unnest(keyword-set))是什么意思! 高手解释一下
例
select title
from books
where 'database' in (unnest(keyword-set))其中(unnest(keyword-set))是什么意思! 高手解释一下
from books
where 'database' in (unnest(keyword-set))
select title
from books
where 'database' in (select datebase1 from tb_datebase)