SQL language - query statement

SQL Language - Query statement (2)
1. Inquire about 2016 level “ Marketing Management ” Professional students choose marketing as an elective course ” Total average score of the test .
2. Check options “C005” The examination result of the course is high 2016056144 Student ID and test scores of all students who have passed the exam .
3. List 2016 The average score of grade a students majoring in e-commerce is 75 A list of students with a score of above and the corresponding average score
4. Inquire about “ Zhang Jihua ” The examination results of the students taught by the teacher .
5. There are more students in a course than 5 The name of the person's teacher and the course taught .
6. The sum of the total scores of the statistical examination is greater than 1400 Students' grades and
7. List what you have learned “ Marketing ” I've learned “ Database principle and application ” Names of all students in the course