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Challenge 50 · The migration locks the table it was meant to widen

Debug Databases · Draft

The brief

The migration locks the table it was meant to widen.

Start it to see the workspace: the brief, the terminal, the hints and the submit step.

Where it came from

A draft with no fix attached: the project, licence, issue and fixing commit that would credit it are not all recorded yet, so it cannot be published and nothing can be graded against it. Publishing also needs a person to review it.

Attempts

4
Attempts
yours
1
Solved
every test green
1
Without a hint
what moves a rank
7.0 / 10
Mean grade
0 hint(s) taken in all
WhenTestsHintsMinutesGradeOutcome
2026-09-11 16:10 7/7 0 24 10/10 Solved
2026-08-18 13:15 3/7 0 39 4/10 Missed
2026-08-08 18:10 5/7 0 39 7/10 Partly fixed
2026-06-27 14:20 5/7 0 73 7/10 Partly fixed