题目内容

被授予DBA角色的用户拥有以下哪些权限?单选()

A. CREATE USER
B. CREATE ROLE
CREATE SESSION
D. 以上全都正确

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下面关于GROUPBY的用法正确的是?多选()

A. select id, score from student group by id,score;
B. select id, sum(score) from student group by id;
C. select sum(score) from student group by id;
D. select id, score from student group by id;

GaussDB100用于实现AZ内高可用,提供秒级快速倒换的特性叫做?单选()

A. Quick Switch
B. Switch Smart
C. Flash Back
D. Switch Turbo

下面哪种别名用法是正确的?多选()

A. select staff_id id from staffs;
B. select staff _id as id from staffs;
C. select staffl_id id from staffs;
D. select staff_id id from staffs;

GaussDB200支持列存、向量化执行技术,可以支挥PB级数据的深度分析与挖掘。单选()

A. TRUE
B. FALSE

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