[adatbazis]: feladatok megoldasa

megoldas-kozep-szint/adatbazis/megoldasok.sql

@@ -2,16 +2,29 @@
 
 
 -- 1. feladat:
-
+CREATE DATABASE `napsutes` DEFAULT CHARACTER SET utf8 COLLATE utf8_hungarian_ci;
 
 -- 3. feladat:
-
+UPDATE regiok
+SET regioNev = "Észak-Írország"
+WHERE regioNev = "Észak Írország";
 
 -- 4. feladat:
-
+SELECT COUNT(*) AS "rekordszam", ROUND(AVG(perc), 2) AS "atlag"
+FROM meresek;
 
 -- 5. feladat:
-
+SELECT ev, ROUND(SUM(perc) / 60, 1) AS "orak"
+FROM regiok JOIN meresek ON regiok.id = meresek.regioId
+WHERE regioNev = "Anglia"
+AND ev BETWEEN 1990 AND 2000
+GROUP BY ev
+ORDER BY ev DESC;
 
 -- 6. feladat:
-
+SELECT ev, perc, regioNev AS "terulet"
+FROM regiok, meresek
+WHERE regiok.id = meresek.regioId
+AND ho = 2
+AND PERC > 6000
+ORDER BY PERC DESC;