Trying to consolidate test results so that each test is in one row. Database I am pulling from has an answer result per row. Sample Data:
Student Name | Test Name | Question Attempt | Answered Correctly (0 = no, 1= yes) |
---|---|---|---|
Mary | Intro Assessment | 1 | 1 |
Mary | Intro Assessment | 1 | 0 |
Mary | Intro Assessment | 1 | 1 |
Joseph | Intro Assessment | 1 | 1 |
Joseph | Intro Assessment | 1 | 1 |
Joseph | Intro Assessment | 1 | 1 |
Tom | Intro Assessment | 1 | 0 |
Tom | Intro Assessment | 1 | 0 |
Tom | Intro Assessment | 1 | 1 |
Desired result if possible:
Student Name | Test Name | Question Attempt | Answered Correctly |
---|---|---|---|
Mary | Intro Assessment | 3 | 2 |
Joseph | Intro Assessment | 3 | 3 |
Tom | Intro Assessment | 3 | 1 |
Any guidance would be appreciated.
It sounds like you just want a basic GROUP BY
with some SUM
s:
SELECT "Student Name", "Test Name"
, SUM("Question Attempt") "Question Attempt"
, SUM("Answered Correctly") "Answered Correctly"
FROM mytable
GROUP BY "Student Name", "Test Name"
GROUP BY "Student Name", "Test Name"
means you want one row per unique student/test and SUM
explains how you want the other data combined.