Provide autocompletion for enum-like column values

[jamietanna]

Is your feature request related to a problem? Please describe.

No

Describe the solution you'd like

When working with tables where columns are an enum, having the WHERE clause autocomplete would be useful.

This would make it possible to more conveniently filter / search the database, when we're aware of the given values of columns.

Describe alternatives you've considered

N/A

Additional context

N/A

This is for an SQLite database with i.e. CHECK statement to indicate it's an enum:

  level TEXT NOT NULL
    CHECK (
      level IN (
        'ERROR',
        'WARN'
      )
    ),