sqlite - SQL - columns for different categories

Question

I am new to SQL. I have a database with data for different exams, for example:

Student Test Grade
--------------------
St1    T1   A
St2    T1   B
St3    T1   B
St1    T2   B
St2    T2   B
St3    T2   A
St1    T3   A
St2    T3   C
St3    T3   B

Then, I would like to print a report using the Tests (T1, T2 and T3) as columns:

Student  T1   T2   T3
----------------------
St1      A    B    A
St2      B    B    C
St3      B    A    B

I have tried different things, but I got stuck on how to produce such a printout. Any help is appreciated!

Answer 1

Use:

  SELECT t.student,
         MAX(CASE WHEN t.test = 'T1' THEN t.grade END) AS T1,
         MAX(CASE WHEN t.test = 'T2' THEN t.grade END) AS T2,
         MAX(CASE WHEN t.test = 'T3' THEN t.grade END) AS T3
    FROM TABLE t
GROUP BY t.student