How can I write SQL in Oracle in my case?

Question

So, Here are the tables-

create table person (
id number,
name varchar2(50)
);

create table injury_place (
id number,
place varchar2(50)
);

create table pe         


        

Answer 1

If you use Oracle 11g or above you can use pivot function for your required output.

SELECT *
FROM (
    SELECT id
        ,place
        ,round((
                cnt / sum(cnt) OVER (
                    ORDER BY NULL
                    )
                ) * 100, 2) AS pct
    FROM (
        SELECT a.id
            ,a.place
            ,count(a.id) AS cnt
        FROM injury_place a
        JOIN person_injuryPlace_map b ON a.id = b.injury_id
        GROUP BY a.id
            ,a.place
        )
    )
pivot(max(id) , max(pct) pct FOR place IN (
            'kitchen' AS kitchen
            ,'Washroom' Washroom
            ,'Rooftop' Rooftop
            ,'Garden' Garden
            ))