Merge branch 'dev_v3.0.1' of http://git.qmth.com.cn/wangliang/distributed-print-service into dev_v3.0.1

distributed-print-business/src/main/resources/mapper/TCStatisticsMapper.xml

@@ -382,7 +382,7 @@
             <if test="teachingRoomId != null and teachingRoomId != ''">
                 and tcs.teaching_room_id = #{teachingRoomId}
             </if>
-            <if test="status != null and status != ''">
+            <if test="status != null">
                 and tcs.status = #{status}
             </if>
             <if test="courseName != null and courseName != ''">