x/pg: Add misc db method support

[flimzy]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.87%. Comparing base (a7d6df7) to head (b674390).
⚠️ Report is 16 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1123   +/-   ##
=======================================
  Coverage   62.87%   62.87%           
=======================================
  Files         291      291           
  Lines       20021    20021           
=======================================
  Hits        12589    12589           
  Misses       6881     6881           
  Partials      551      551           

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