Use query.params() for selectable queries

[abetkin]

No description provided.

[lovelydinosaur]

Heya - thanks for this!
Could we get a test case and a brief explanation?

[abetkin]

added a test

[abetkin]

@tomchristie ping

[garyd203]

Hey @abetkin thanks for fixing this, I ran into the same problem :-). FWIW I have worked around the problem by doing database.fetch_all(select_query.params(foo=1))

By the way, I notice that the test run failed simply because of file formatting in test_databases.py (perhaps just not enough new lines).

[lovelydinosaur]

There's a linter failure on this pull request at the moment.
Running scripts/lint would resolve this.