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次のような 7 つのテーブルがあるとします。

class_teacher_lesson

class_teacher_lession_ID, class_ID, teacher_ID, lesson_ID

クラス

class_ID, class

先生

teacher_ID, teacher

レッスン

lesson_ID, lesson

学生

student_ID, class_ID, ..., ....

調査回答

survey_answer_ID, survey_question_ID, class_teacher_lession_ID, survey_answer

調査質問

survey_question_ID, survey_question,

結果は次のようになります。

ループでこれを取得します：

レッスン数学：

survey_question (where teacher_id = 11 and lesson_id = 13):
Total Students            Total Students Answered Survey         survey_answer AVG
     155                                45                              79%

survey_question 2 (where teacher_id = 11 and lesson_id = 13):
Total Students            Total Students Answered Survey         survey_answer AVG
     155                                99                              87%

レッスン英語:

survey_question (where teacher_id = 11 and lesson_id = 15):
Total Students            Total Students Answered Survey         survey_answer AVG
     90                                20                              50%

survey_question 2 (where teacher_id = 11 and lesson_id = 15):
Total Students            Total Students Answered Survey         survey_answer AVG
     90                                25                              34%

これまでのところ、私はこれを試しました：

SELECT teacher AS 'Teacher', class AS 'Class', lesson AS 'Lesson',
COUNT(student_ID) AS 'Number of students',
COUNT(enquete_antwoord_ID) AS 'Total students answered survey', 
enquete_vraag AS 'Survey Question'
FROM Teacher
LEFT JOIN class_teacher_lesson
ON teacher.teacher_ID = class_teacher_lesson.teacher_ID
LEFT JOIN lesson
ON class_teacher_lesson.class_ID = lesson.lesson_ID
LEFT JOIN class
ON class_teacher_lesson.class_ID = class.class_ID
LEFT JOIN student
ON class.class_ID = student.class_ID
LEFT JOIN survey_answer
ON class_teacher_lesson.class_teacher_lesson_ID = 
survey_answer.class_teacher_lesson
LEFT JOIN survey_question
ON survey_answer.survey_question_ID = survey_question.survey_question_ID
WHERE teacher.teacher_ID = '1158' AND lesson.lesson_ID = '449'
GROUP BY class.class, lesson.lesson, teacher.teacher,
survey_answer.survey_answer, survey_question

この結果:

Teacher:  Class:   Lesson:  Number of students:  Filled in:    Survey_question:
t1        c1       math     54                   54            question1?
t1        c1       math     24                   0             NULL
t1        c1       math     22                   0             NULL

結果は次のようになります。

Teacher:  Class:   Lesson:  Number of students:  Filled in:    Survey_question:
t1        c1       math     90                   54            question1?
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2 に答える 2

0 
select survey_question, teacher_id, lesson_id , 
       count(1) as Total_student_answer_survey, 
       (select count(1) from student) as total_student,   
       count(1)/(select count(1) from student) * 100 as survey_percentage
from survey_answer sa
inner join survey_question sq 
    on sa.survey_question_id = sq.survey_question_id
inner join class_teacher_lesson ctl 
    on sa.class_teacher_lesson_id = ctl.class_teacher_lesson_id
group by teacher_id, lesson_id, survey_question_id
于 2013-10-30T10:46:35.563 に答える