Refer to the original article -http: //bjbsair.com/2020-03-25/tech-info/6224/
First, the table names and field
-1 student table student (s_id, s_name, s_birth, s_sex) -. Student number, student's name, date of birth, student sex
-2 curriculum course (c_id, c_name, t_id) -. Course number, course name, teacher numbers
-3 teacher table teacher (t_id, t_name) -. No teacher, teacher's name
-4 transcript score (s_id, c_id, s_score) - student number, course number, score
Two, Mysql title
Query the name of the same sex with the list of students, the number of the same name and statistics
Read the small partners, look forward to your valuable vote cast, the late Big Star @Python based on the difficulty factor, to which 50 SQL question reordering, sorting summary.
Degree of difficulty (radio) 0 person 0% A. ★ 0 person 0% B. ★★ 0 person 0% C. ★★★ 0 person 0% D. ★★★★ 0 person 0% E. ★★★★ ★ vote
Three, Mysql program
Output:
