Question: I ESPECIALLY need the queries to assign/update grades for SQL. Any help is appreciated Write a function which takes marks as input and returns letter

I ESPECIALLY need the queries to assign/update grades for SQL. Any help is appreciated
Write a function which takes marks as input and returns letter grade according to following grading classes 20 points] 100-87 86-80 79-70 69-60 59-0 Now, assume a table as student (ID, marks, grade). Write a query to assign/update grade of students based on their marks
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