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															@@ -260,7 +260,7 @@ 
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															 		SELECT s.user_id_,su.avatar_,su.phone_,su.username_,ROUND(SUM(mcr.play_time_) / 60) total_play_time_, 
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															 		SELECT s.user_id_,su.avatar_,su.phone_,su.username_,ROUND(SUM(mcr.play_time_) / 60) total_play_time_, 
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															 			   COUNT(DISTINCT DATE_FORMAT(mcr.create_time_,"%Y-%m-%d")) train_day_, 
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															 			   COUNT(DISTINCT DATE_FORMAT(mcr.create_time_,"%Y-%m-%d")) train_day_, 
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															 			   COUNT(DISTINCT mcr.behavior_id_) train_num_, 
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															 			   COUNT(DISTINCT mcr.behavior_id_) train_num_, 
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															-			   COUNT(DISTINCT CASE WHEN mcr.feature_ = 'CLOUD_STUDY_EVALUATION' THEN mcr.behavior_id_ = NULL ELSE mcr.behavior_id_ END) record_num_ 
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															+		COUNT(CASE WHEN mcr.feature_ = 'CLOUD_STUDY_EVALUATION' THEN mcr.behavior_id_ ELSE NULL END) record_num_ 
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															 		FROM teacher t 
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															 		FROM teacher t 
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															 				 LEFT JOIN student s ON t.id_ = s.teacher_id_ 
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															 				 LEFT JOIN student s ON t.id_ = s.teacher_id_ 
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															 				 LEFT JOIN sys_user su ON su.id_ = s.user_id_ 
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															 				 LEFT JOIN sys_user su ON su.id_ = s.user_id_ 
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