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				@@ -583,6 +583,44 @@ 
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				 		GROUP BY DATE_FORMAT(mcr.create_time_, ${groupBy}) 
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				 		ORDER BY 'date' 
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				 	</select> 
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				+    <select id="getStudentTrainCount" 
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				+            resultType="com.yonge.cooleshow.biz.dal.wrapper.TeacherIndexWrapper$PracticeTimeDto"> 
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				+		select COUNT(DISTINCT mcr.user_id_) practiceTime,DATE_FORMAT(mcr.create_time_, ${groupBy}) 'date' from sys_music_compare_record mcr 
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				+		where mcr.user_id_ IN 
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				+		<foreach collection="studentIds" item="studentId" open="(" close=")" separator=","> 
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				+			#{studentId} 
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				+		</foreach> 
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				+		<if test="param.startTime != null and param.startTime != ''"> 
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				+			AND mcr.create_time_ BETWEEN #{param.startTime} AND #{param.endTime} 
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				+		</if> 
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				+		GROUP BY DATE_FORMAT(mcr.create_time_, ${groupBy}) 
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				+		ORDER BY 'date' 
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				+	</select> 
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				+	<select id="getStudentTrainOverViewList" 
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				+			resultType="com.yonge.cooleshow.biz.dal.wrapper.TeacherIndexWrapper$StudentPracticeSummaryDto"> 
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				+		select su.username_ studentName,GROUP_CONCAT(sb.name_) subjectName,SUM(smcr.play_time_) totalPracticeTime, 
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				+		       COUNT(DISTINCT DATE_FORMAT(smcr.create_time_, '%Y-%m-%d')) practiceDays, 
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				+		       SUM(smcr.play_time_) / COUNT(DISTINCT DATE_FORMAT(smcr.create_time_, '%Y-%m-%d')) averagePracticeTime 
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				+		from sys_music_compare_record smcr 
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				+				 left join sys_user su ON su.id_ = smcr.user_id_ 
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				+				 left join student st ON st.user_id_ = su.id_ 
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				+				 left join subject sb ON FIND_IN_SET(sb.id_,st.subject_id_) 
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				+		where smcr.user_id_ IN 
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				+		<foreach collection="studentIds" item="studentId" open="(" close=")" separator=","> 
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				+			#{studentId} 
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				+		</foreach> 
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				+		<if test="param.startTime != null and param.startTime != ''"> 
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				+			AND smcr.create_time_ BETWEEN #{param.startTime} AND #{param.endTime} 
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				+		</if> 
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				+		GROUP BY smcr.user_id_ 
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				+		<if test="param.sortField != null and param.sortField != ''"> 
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				+			ORDER BY ${param.sortField} ${param.sortType} 
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				+		</if> 
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				+		<if test="param.sortField == null or param.sortField == ''"> 
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				+			ORDER BY totalPracticeTime DESC 
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				+		</if> 
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				+		LIMIT 10 
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				+	</select> 
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				 	<!--曲目练习统计--> 
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				 </mapper> 
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