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2020-09-21 14:45:00
【2020年8月】oracle ocp 071考试新题(-6题)cuug内部题库
choose the best answer.
examine this statement:
select 1 as id, 'john' as first_name, null as commission
from dual
intersect
select 1, 'john' ,null
from dual
order by 3;
what is returned upon execution?
a) 2 rows
b) 1 row.
c) 0 rows
d) an error
2020年8月份oracle ocp 071考试新题(-5题)cuug内部题库,钉钉群(35277291)oracle金牌名师亲自题库解析