update 修正参数

src/main/java/cn/teammodel/repository/LessonRecordRepository.java

@@ -18,7 +18,7 @@ public interface LessonRecordRepository extends CosmosRepository<LessonRecord, S
             "(IS_NULL(@endTime) or c.startTime <= @endTime) and "+
             "(IS_NULL(@grade) or array_contains(c.grade,@grade)) and " +
             "c.status<>404 and "+
-            "c.periodId = @periodId and "+
+            "(IS_NULL(@periodId) or c.periodId = @periodId) and "+
             "(IS_NULL(@subjectId) or c.subjectId = @subjectId) and "+
             "(IS_NULL(@tmdId) or c.tmdid = @tmdId) ")
     List<LessonRecord> getLessonsByConditions(String code, Long startTime, Long endTime,String subjectId,String tmdId,String grade,String periodId);