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When editing / updating a GPKG `last_change` column in gpkg_contents isn't correctly upheld

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
csharp
Domain
databases

Research direction

Start by running the merger on a GeoPackage and inspect the gpkg_contents last_change value before and after an update. Review the GeoPackage specification and the merger entry point to determine which timestamp behavior is intended; done means the chosen behavior is implemented and the updated value can be verified after a write.

Written by the indexing model from the issue text.

Description

bug

Describe the bug

A clear and concise description of what the bug is.

To Reproduce

Run the merger on any geopackage to update it. The last_change field won't be updated.

Expected behavior

Either update last_change to be the time of the last write to the table, or to be the data's original creation date.

Additional context

The last_change column as described in geopackage spec:

The last_change SHOULD contain the timestamp of when the content in the referenced table was last updated, in ISO8601 format. Note that since it is not practical to ensure that this value is maintained properly in all cases, this value should be treated as informative.

Dominant language
C#
Stars
1
Forks
2
Avg merge
21m
Merged PRs (30d)
1

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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