Brian Sperlongano b7edcf6153 Convert osm_route_member unique index to trigger (#1501) ...

This PR changes the three-column unique index to an on-insert trigger. This should fix the issues we're having with CI failures and still achieve the behavior of coalescing duplicate routes. 

I moved the concurrency_index calculation into an intermediate materialized view to separate the de-duplication capability from both DENSE_RANK() and from imposm updates.

2023-03-06 17:10:30 +01:00

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