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Remove unique constraints from flow_*_ref
Concern Raised873cbbca3e61

Authored by matthiasmullie.

Description

Remove unique constraints from flow_*_ref

The unique constraints are actually on all columns.
We don't really need this:

  • it's not a proper way to ensure unique data
  • code already inserts only uniques
  • doesn't really matter if we were to have duplicates in there, that data is just a denormalization anyway (the real data can be extracted from flow_revision.rev_content)

But I've added an extra check just to make sure that duplicates,
which should never even make it in, won't show up.

Bug: T92284
Change-Id: I8fa92f5cf72bf979bc774c7202f55bc8b6253a56

Details