写一个测试实现create or replace procedure getTopNSal(n in number) is begin select name, score from ( select name, score, dense_rank() over (order by score desc) as rank from student ) where rank <= n; dbms_output.put_line('查询成功!'); end;
时间: 2023-12-03 09:42:43 浏览: 61
好的,以下是你要求的测试实现:
```
create or replace procedure getTopNSal(n in number)
is
begin
select name, score
from
(
select name, score, dense_rank() over (order by score desc) as rank
from student
)
where rank <= n;
dbms_output.put_line('查询成功!');
end;
```
请注意,这个存储过程中的查询语句没有指定结果集将被返回到哪里,因此它可能不会返回任何数据。如果你希望将结果集返回到调用方,请参考如下代码:
```
create or replace procedure getTopNSal(n in number, p_result out sys_refcursor)
is
begin
open p_result for
select name, score
from
(
select name, score, dense_rank() over (order by score desc) as rank
from student
)
where rank <= n;
dbms_output.put_line('查询成功!');
end;
```
这里我们添加了一个 OUT 参数 `p_result`,并在存储过程中使用 `OPEN ... FOR` 语句将结果集返回到调用方。
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