录音时长统计相关代码

src/main/java/com/rj/mapper/AudioManagementStatisticsMapper.java

@@ -89,4 +89,32 @@ public interface AudioManagementStatisticsMapper extends BaseMapper<AudioManagem
      * @return 删除的记录数
      */
     int deleteByStatisticsDate(@Param("date") LocalDate date);
+
+    /**
+     * 根据销售人员和日期范围聚合查询总录音时长和平均录音时长
+     * @param salesId 销售人员ID
+     * @param startDate 开始日期
+     * @param endDate 结束日期
+     * @return 聚合统计结果（包含总录音时长、总录音数量、平均录音时长、销售人员姓名）
+     */
+    @Select("SELECT " +
+            "sales_id, " +
+            "MAX(sales_name) as sales_name, " +
+            "SUM(sales_total_duration) as total_duration, " +
+            "SUM(sales_recording_count) as total_count, " +
+            "CASE " +
+            "  WHEN SUM(sales_recording_count) > 0 THEN " +
+            "    ROUND(SUM(sales_total_duration) / SUM(sales_recording_count), 2) " +
+            "  ELSE 0 " +
+            "END as avg_duration " +
+            "FROM audio_management_statistics " +
+            "WHERE sales_id = #{salesId} " +
+            "AND statistics_date >= #{startDate} " +
+            "AND statistics_date <= #{endDate} " +
+            "AND sales_id IS NOT NULL " +
+            "AND sales_id != '' " +
+            "GROUP BY sales_id")
+    Map<String, Object> getSalesAggregateStatistics(@Param("salesId") String salesId, 
+                                                      @Param("startDate") LocalDate startDate, 
+                                                      @Param("endDate") LocalDate endDate);
 }