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mec-biz/src/main/resources/config/mybatis/CloudTeacherOrderMapper.xml

@@ -182,7 +182,7 @@
         FROM cloud_teacher_order
         WHERE student_id_ = #{studentId}
         <if test="musicGroupId != null and musicGroupId != ''">
-            music_group_id_ = #{musicGroupId}
+          AND music_group_id_ = #{musicGroupId}
         </if>
           AND status_ IN (1, 2)
     </select>