3.4 KiB
3.4 KiB
Lab 4 - OracleDB
Verifying the existence of the previous labs' DB.
SQL> select table_name from user_tables;
TABLE_NAME
--------------------------------------------------------------------------------
ACCIDENT
CAR
OWNS
PARTICIPATED
PERSON
Q1. Find the total number of people who owned cars that were involved in accidents in 2008.
Ans.
Modifying the table to add required entry from 2008.
SQL> select * from accident;
REPORT_NUMBER ACCD_DATE LOCATION
------------- --------- --------------------------------------------------
1 01-JAN-24 Delhi India
3 29-FEB-24 India
5 31-MAR-00 Gujrat India
12 17-JUL-00 karnataka India
10 01-JAN-08 Manipal India
SQL> update accident set ACCD_DATE='01-Jan-2008' where REPORT_NUMBER=1
2 ;
1 row updated.
SQL> select * from accident;
REPORT_NUMBER ACCD_DATE LOCATION
------------- --------- --------------------------------------------------
1 01-JAN-08 Delhi India
3 29-FEB-24 India
5 31-MAR-00 Gujrat India
12 17-JUL-00 karnataka India
10 01-JAN-08 Manipal India
SQL> select count(distinct Driver_ID#) from participated natural join accident where extract(year from accd_date)=2008;
COUNT(DISTINCTDRIVER_ID#)
-------------------------
1
Q2. Find the number of accidents in which cars belonging to a specific model were involved.
Ans.
SQL> select * from car;
REGNO MODEL YEAR
-------------------- ------------------------------ ----------
ABCD0001 Celtos 3
EFGH2001 Ferrari 32
DSDS0001 Urus 5
ABCD4001 Honda City 1
HFSP5601 mini cooper 7
SQL> select count(distinct driver_id#) from car natural join participated where model like 'Urus';
COUNT(DISTINCTDRIVER_ID#)
-------------------------
1
Q3. Produce a listing with header as OWNER_NAME, No. of Accidents, and Total Damage Amount in a descending order on total damage.
Ans.
SQL> select name as OWNER_NAME,count(distinct DRIVER_ID#),sum(Damage_amount) as total_Damage from person natural join participated group by(name) order by(TOTAL_DAMAGE) DESC;
OWNER_NAME COUNT(DISTINCTDRIVER_ID#) TOTAL_DAMAGE
---------- ------------------------- ------------
Amogh 1 26500
Rohan 1 10000
Ramesh 1 150
Q4. List the Owners who made more than 2 accidents in a year.
Ans.
SQL> insert into participated values(1236,'DSDS0001',99,100000000);
1 row created.
SQL> select name,extract(year from accd_date) as year,count(report_number) as total_accidents from person natural join participated join accident using (report_number) group by(name,extract(year from accd_date)) having count(report_number)>=2;
NAME YEAR TOTAL_ACCIDENTS
---------- ---------- ---------------
Ramesh 2024 2
Q5. List the owners who are not involved in any accident.
Ans.
SQL> select name from person where(driver_id#) not in(select driver_id# from participated);
NAME
----------
Rohit
Saarthak