Fix issue #36

[jwills]

Problem

We have a bug where the update operation fails on ingest when all of the columns are primary keys.

Proposed changes

If all of the columns in a table are primary keys, skip the UPDATE operation-- there's nothing for us to do there.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

• Description above provides context of the change
• I have added tests that prove my fix is effective or that my feature works
• Unit tests for changes (not needed for documentation changes)
• CI checks pass with my changes
• Bumping version in setup.py is an individual PR and not mixed with feature or bugfix PRs
• Commit message/PR title starts with [AP-NNNN] (if applicable. AP-NNNN = JIRA ID)
• Branch name starts with AP-NNN (if applicable. AP-NNN = JIRA ID)
• Commits follow "How to write a good git commit message"
• Relevant documentation is updated including usage instructions

[jwills]

Fixes #36

[jwills]

This is failing for MD reasons; will run a test with it against 0.9.2 and ensure it works there