I'm not sure I even understand the sample SQL, given: > Each snapshot can have one or two parents. When merging branches, we perform a breadth-first search on

I'm not sure I even understand the sample SQL, given: > Each snapshot can have one or two parents. When merging branches, we perform a breadth-first search on the history of each change until we find the common ancestor between both branches. This is the merge base. And the SQL: select * from schema_snapshots where id = 20 (...) schema_snapshots where id = 24 // *thousands more queries* Why select star here? Surely they mean: SELECT left_parent_id as parent_id FROM schema_snapshots ) UNION (SELECT right_parent_id as parent_id FROM schema_snapshots) WHERE id in (1,2,3...) or something?