Tricky SQL query involving consecutive values
- by Gabriel
I need to perform a relatively easy to explain but (given my somewhat limited skills) hard to write SQL query.
Assume we have a table similar to this one:
exam_no | name | surname | result | date
---------+------+---------+--------+------------
1 | John | Doe | PASS | 2012-01-01
1 | Ryan | Smith | FAIL | 2012-01-02 <--…