text: BEGIN;
  
  -- Insert migration here. See README.md. Highlights:
  --  * Always use IF EXISTS. eg: DROP TABLE IF EXISTS global_dep_private;
  --  * All migrations must be backward-compatible. Old versions of Sourcegraph
  --    need to be able to read/write post migration.
  --  * Historically we advised against transactions since we thought the
  --    migrate library handled it. However, it does not! /facepalm
  
  DROP TABLE IF EXISTS cm_queries;
  COMMIT;
  