ALTER TABLE warc ADD blob_id bigint;
ALTER TABLE artifact ADD blob_id bigint;
ALTER TABLE warc ADD blob_id bigint;
ALTER TABLE artifact ADD blob_id bigint;

-- make path fields nullable
ALTER TABLE warc MODIFY path varchar(4096) NULL;
ALTER TABLE artifact MODIFY path varchar(4096) NULL;
Allow path fields to be nullable now that they could have blob_id
Allow path fields to be nullable now that they could have blob_id
