Sql utils

[isaac-tfn]

Describe Changes

Task Checklist

• [ ] Have unittests been added (testing individual functions and their edge cases)
• [ ] Have integration tests been added (if applicable, to test modules of functionality)
• [ ] Updated RELEASE.md to reflect changes in PR
• [ ] Have new dependencies been added?
  • [ ] Have they been added to either requirements.txt or requirements_dev.txt.
  • [ ] Have they been added to pyproject.toml

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.73%. Comparing base (3c7ba4b) to head (2f96e5a). Report is 221 commits behind head on main.

:exclamation: Current head 2f96e5a differs from pull request most recent head 35b8840. Consider uploading reports for the commit 35b8840 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #81 +/- ## ======================================= Coverage 94.73% 94.73% ======================================= Files 22 22 Lines 1539 1539 ======================================= Hits 1458 1458 Misses 81 81 ```

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[isaac-tfn]

This looks good, just a couple of requests:

• I've skipped sql tests, could you make sure other checks are passing e.g. black
• Please include short docstrings for tests to explain what they should do

No rush on this, as you can tell from how long it's taken me to review!