Question

Given a table of students and grades, is there a way to increment each student’s grade by 10%, but without going over 100?

Right now I do

UPDATE studentCourse
SET grade = grade + 10 * (grade/100) 
WHERE csid = 1

In other words, if a student has 60, after the update he should have 66. But if a student has a 98, after the update his grade should be 100 (and not 108).

All this has to be done in standard SQL

Answer 1

You could you just run two statements

UPDATE studentCourse
SET grade = grade + 10 * (grade/100) 
WHERE csid = 1;

followed by

UPDATE studentCourse
SET grade = 100
where csid = 1
  and grade > 100;

COMMIT;