修改sqlbug

src/main/java/org/rcisoft/business/bchapter/dao/BChapterRepository.java

@@ -89,7 +89,7 @@ public interface BChapterRepository extends BaseMapper<BChapter> {
             " bf.file_time AS fileTime ," +
             " bf.file_size AS fileSize ," +
             " if((SELECT count(0) from b_file bbf\n" +
-            "             left join b_lesson bl on bl.business_id = bc.lesson_id\n" +
+            "             left join b_lesson bl on bl.business_id = bbf.lesson_id\n" +
             "             where bbf.video_url = bf.video_url\n" +
             "             and bl.corp_id != '###')>1,1,0) isCutPdf " +
             " FROM " +