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[DB/P3] Solved exercises
1 files changed, 38 insertions, 0 deletions
| -rw-r--r-- | Year 3/Databases/Practice03.sql | 38 |
diff --git a/Year 3/Databases/Practice03.sql b/Year 3/Databases/Practice03.sql new file mode 100644 index 0000000..eed69b0 --- /dev/null +++ b/Year 3/Databases/Practice03.sql @@ -0,0 +1,38 @@ +-- MOVIES +use MOVIES; +-- Ex 1 +select ms.NAME from MOVIESTAR ms where ms.GENDER = "F" and ms.NAME = ANY (select me.NAME from MOVIEEXEC me where me.NETWORTH > 10000000); +-- Ex 2 +select ms.NAME from MOVIESTAR ms where ms.NAME != ALL (select NAME from MOVIEEXEC); +-- Ex 3 +select TITLE from MOVIE where LENGTH > (select LENGTH from MOVIE where TITLE = "Gone With the Wind"); +-- Ex 4 +select me.NAME, m.TITLE from MOVIEEXEC me join MOVIE m on m.`PRODUCERC#` = me.`CERT#` where me.NETWORTH > (select NETWORTH from MOVIEEXEC where NAME = "Merv Griffin"); + +-- PC +use PC; +-- Ex 1 +select p.maker from product p join pc on pc.model = p.model where pc.speed >= 500; +-- Ex 2 +select * from printer p where p.price >= ALL (select price from printer); +-- Ex 3 +select * from laptop l where l.speed < ANY (select price from pc); +-- Ex 4 +select p.model from (select model, price from pc union select model, price from laptop union select model, price from printer) p where p.price >= ALL (select price from pc union select price from laptop union select price from printer); +-- Ex 5 +select p.maker from product p join printer pr on pr.model = p.model where pr.color = "y" and pr.price <= ALL (select price from printer where color = "y"); +-- Ex 6 +select p.maker from product p join (select * from pc where ram <= ALL (select ram from pc)) pcc on pcc.model = p.model where pcc.speed >= ALL (select speed from pc where ram <= ALL (select ram from pc)); + +-- SHIPS +use SHIPS; +-- Ex 1 +select distinct c.COUNTRY from CLASSES c where c.NUMGUNS >= ALL (select NUMGUNS from CLASSES); +-- Ex 2 +select distinct s.CLASS from SHIPS s join OUTCOMES o on o.SHIP = s.NAME where o.RESULT = "sunk"; +-- Ex 3 +select s.NAME from SHIPS s join CLASSES c on c.CLASS = s.CLASS where c.bore = 16; +-- Ex 4 +select distinct o.BATTLE from OUTCOMES o join SHIPS s on s.NAME = o.SHIP where s.CLASS = "Kongo"; +-- Ex 5 +select s.NAME from SHIPS s join (select * from CLASSES c where c.NUMGUNS >= ALL (select NUMGUNS from CLASSES where BORE = c.BORE)) cl on cl.CLASS = s.CLASS; |
