Tutorium 3 reationships

tutorium_3_relationships

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+-- 1-to-1-relationship
+SELECT *
+	FROM "IDBS01_Q12025"."Population" AS population
+	inner join "IDBS01_Q12025"."Country" as ctry
+		on ctry.code = population.country
+;
+
+-- 1-to-cn-relationship
+SELECT *
+	FROM "IDBS01_Q12025"."Country" as ctry
+	FULL OUTER JOIN "IDBS01_Q12025".borders as borders
+		ON ctry.code = borders.country1
+;
+
+
+-- 1-to-cn-relationship
+SELECT *
+	FROM "IDBS01_Q12025"."Country" as ctry
+	LEFT OUTER JOIN "IDBS01_Q12025"."geo_Desert" AS geodes
+		ON ctry.code = geodes.country
+	LEFT OUTER JOIN "IDBS01_Q12025"."Desert" AS des
+		on geodes.desert = des.name
+;