Don’t delete task runs if the attached task schedule or instance is deleted

packages/database/prisma/migrations/20240417142604_dont_delete_task_runs_if_schedules_are_deleted/migration.sql

@@ -0,0 +1,11 @@
+-- DropForeignKey
+ALTER TABLE "TaskRun" DROP CONSTRAINT "TaskRun_scheduleId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "TaskRun" DROP CONSTRAINT "TaskRun_scheduleInstanceId_fkey";
+
+-- AddForeignKey
+ALTER TABLE "TaskRun" ADD CONSTRAINT "TaskRun_scheduleInstanceId_fkey" FOREIGN KEY ("scheduleInstanceId") REFERENCES "TaskScheduleInstance"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "TaskRun" ADD CONSTRAINT "TaskRun_scheduleId_fkey" FOREIGN KEY ("scheduleId") REFERENCES "TaskSchedule"("id") ON DELETE SET NULL ON UPDATE CASCADE;

packages/database/prisma/schema.prisma

@@ -1629,10 +1629,10 @@ model TaskRun {
   dependency             TaskRunDependency?
   CheckpointRestoreEvent CheckpointRestoreEvent[]
 
-  scheduleInstance   TaskScheduleInstance? @relation(fields: [scheduleInstanceId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+  scheduleInstance   TaskScheduleInstance? @relation(fields: [scheduleInstanceId], references: [id], onDelete: SetNull)
   scheduleInstanceId String?
 
-  schedule   TaskSchedule? @relation(fields: [scheduleId], references: [id], onDelete: Cascade, onUpdate: Cascade)
+  schedule   TaskSchedule? @relation(fields: [scheduleId], references: [id], onDelete: SetNull)
   scheduleId String?
 
   @@unique([runtimeEnvironmentId, idempotencyKey])