benedikt-brandtner-bikemap 91dd853a89 Transportation_route_member_coalesced constraint errors ...

Multi-Column Primary-Keys (Unique-Constraints) must not contain NULL values in postgres up until version 15.

This PR coalesces NULL to empty strings for the primary columns during `transportation_route_member_coalesced` updates and import.

Additionally adds the missing `concurrency_index` to UPSERT statement of `transportation_route_member_coalesced`

2023-04-26 22:19:34 +02:00

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