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backend/prisma/migrations/20260123133000_rule_order/migration.sql

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+ALTER TABLE "Rule" ADD COLUMN "position" INTEGER NOT NULL DEFAULT 0;
+
+WITH ordered AS (
+  SELECT
+    "id",
+    "tenantId",
+    ROW_NUMBER() OVER (PARTITION BY "tenantId" ORDER BY "createdAt" ASC, "id" ASC) - 1 AS pos
+  FROM "Rule"
+)
+UPDATE "Rule" r
+SET "position" = ordered.pos
+FROM ordered
+WHERE ordered.id = r.id;
+
+CREATE INDEX "Rule_tenantId_position_idx" ON "Rule"("tenantId", "position");