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				@@ -647,7 +647,7 @@ 
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				                 AND cs.class_group_id_ = #{queryInfo.classGroupId} 
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				             </if> 
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				             <if test="queryInfo.teacherId != null"> 
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				-                AND cs.actual_teacher_id_ #{queryInfo.teacherId} 
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				+                AND cs.actual_teacher_id_ = #{queryInfo.teacherId} 
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				             </if> 
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				             <if test="queryInfo.musicGroupIds != null and queryInfo.musicGroupIds.size > 0"> 
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				                 AND cs.music_group_id_ IN 
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