Enforce natural key uniqueness by adding unique constraints to Bundesland, Platz, Altersklasse, and Land tables.

2026-03-28 20:52:58 +01:00
parent 74df3514ae
commit 9ec8535ff7
3 changed files with 51 additions and 0 deletions
@@ -0,0 +1,46 @@
+-- Enforce natural key uniqueness for master-data upserts
+
+-- Bundesland: unique (land_id, kuerzel) for non-null kuerzel values
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes WHERE schemaname = 'public' AND indexname = 'ux_bundesland_land_kuerzel'
+  ) THEN
+    CREATE UNIQUE INDEX ux_bundesland_land_kuerzel
+      ON bundesland(land_id, kuerzel)
+      WHERE kuerzel IS NOT NULL;
+  END IF;
+END$$;
+
+-- Platz: unique (turnier_id, name)
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes WHERE schemaname = 'public' AND indexname = 'ux_platz_turnier_name'
+  ) THEN
+    CREATE UNIQUE INDEX ux_platz_turnier_name
+      ON platz(turnier_id, name);
+  END IF;
+END$$;
+
+-- Altersklasse: unique (altersklasse_code) – ensure index exists
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes WHERE schemaname = 'public' AND indexname = 'altersklasse_altersklasse_code_unique'
+  ) THEN
+    CREATE UNIQUE INDEX altersklasse_altersklasse_code_unique
+      ON altersklasse(altersklasse_code);
+  END IF;
+END$$;
+
+-- Land: unique (iso_alpha3_code) – ensure index exists
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes WHERE schemaname = 'public' AND indexname = 'land_iso_alpha3_code_unique'
+  ) THEN
+    CREATE UNIQUE INDEX land_iso_alpha3_code_unique
+      ON land(iso_alpha3_code);
+  END IF;
+END$$;