Refer to the original article -http: //bjbsair.com/2020-03-25/tech-info/6232/
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
Student information query name contains "wind" word
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 analysis
There are two wildcards like
% (Percent sign): represents zero, one, or more characters.
_ (Underscore): represents a number or character.
Four, Mysql program
1, Mysql program:
2, Mysql results:
