-- How many 3D models a request made, as images says how many pictures: what
-- per_mesh is charged by, in the request rows and in the sums.
ALTER TABLE usage ADD COLUMN meshes INTEGER NOT NULL DEFAULT 0;
ALTER TABLE usage_5m ADD COLUMN meshes INTEGER NOT NULL DEFAULT 0;
ALTER TABLE usage_1h ADD COLUMN meshes INTEGER NOT NULL DEFAULT 0;
ALTER TABLE usage_1d ADD COLUMN meshes INTEGER NOT NULL DEFAULT 0;