|  | @@ -611,11 +611,13 @@
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				|  |  |      </select>
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				|  |  |      <select id="countStudentTrialPractices" resultType="int">
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				|  |  |          SELECT
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				|  |  | -            COUNT(pg.id_)
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				|  |  | +            COUNT( DISTINCT pg.id_ )
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				|  |  |          FROM
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				|  |  | -            practice_group pg
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				|  |  | +            course_schedule cs
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				|  |  | +            LEFT JOIN practice_group pg ON pg.id_ = cs.music_group_id_
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				|  |  |          WHERE
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				|  |  |              pg.student_id_ = #{studentId}
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				|  |  | +            AND cs.group_type_ = 'PRACTICE'
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				|  |  |              AND pg.type_ = 'TRIAL'
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				|  |  |      </select>
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				|  |  |      <select id="findStudentAndTeacherTrialPractices" resultMap="com.ym.mec.biz.dal.dao.CourseScheduleDao.CourseSchedule">
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