|  | @@ -573,8 +573,8 @@
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				|  |  |      <select id="queryMusicGroupCourseSchedule" resultMap="MusicGroupCourseScheduleDto">
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				|  |  |          SELECT cs.id_ course_schedule_id_,cs.class_date_,cs.start_class_time_,cs.end_class_time_,cs.class_group_id_,
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				|  |  |          cs.type_ course_schedule_type_,cs.status_ course_schedule_status_,cg.name_ course_schedule_name_,
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				|  |  | -        IF(ISNULL(ta.sign_in_status_),3,ta.sign_in_status_) sign_in_status_,
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				|  |  | -        IF(ISNULL(ta.sign_out_status_),3,ta.sign_out_status_) sign_out_status_
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				|  |  | +        IF(ta.sign_in_status_ IS NULL,3,ta.sign_in_status_) sign_in_status_,
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				|  |  | +        IF(ta.sign_out_status_ IS NULL,3,ta.sign_out_status_) sign_out_status_
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				|  |  |          FROM course_schedule cs
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				|  |  |          LEFT JOIN class_group cg ON cg.id_ = cs.class_group_id_
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				|  |  |          LEFT JOIN teacher_attendance ta ON ta.course_schedule_id_ = cs.id_
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				|  | @@ -660,7 +660,6 @@
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				|  |  |          <foreach collection="list" item="item" index="index" open="(" close=")" separator=",">
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				|  |  |              #{item}
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				|  |  |          </foreach>
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				|  |  | -        AND current_class_times_ < total_class_times_
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				|  |  |      </update>
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				|  |  |      <update id="batchUpdateClassGroupCourseTimes" parameterType="map">
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				|  |  |          <foreach collection="classGroupCourseTimes.entrySet()" index="key" item="value" open="" close="" separator=";">
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				|  | @@ -859,8 +858,7 @@
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				|  |  |          <result property="portrait" column="head_url_"/>
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				|  |  |      </resultMap>
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				|  |  |      <select id="queryImUser" resultMap="ImUserModelMap">
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				|  |  | -        SELECT su.id_,su.real_name_,
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				|  |  | -        IF(su.avatar_ IS NULL OR su.avatar_ = '','https://daya-online.oss-cn-beijing.aliyuncs.com/201910/RgHwgKc.jpg',su.avatar_) head_url_
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				|  |  | +        SELECT su.id_,su.real_name_,su.avatar_ head_url_
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				|  |  |          FROM sys_user su
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				|  |  |          WHERE su.id_ IS NOT NULL
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				|  |  |      </select>
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