R1:736bda7081c9

Fix SQL issue with Ponder migration

Summary: This fails to apply on my second sandbox with incorrect DOUBLE value. Reran SQL, works as expected.

Test Plan: Rerun new SQL on ponder_question table

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D13830