column_name,column_description id,System generated unique id for the pull request. issue_id,Foreign key that references the issue table. head_repo_id,"Foreign key that references the repository table, referencing the current branch." head_user_id,"Foreign key that references the user table, referencing who created the current branch." _fivetran_synced,Timestamp of when Fivetran synced a record HEAD_REF, MERGE_COMMIT_SHA, HEAD_SHA, BASE_USER_ID, BASE_LABEL, BASE_REF, BASE_SHA, BASE_REPO_ID, HEAD_LABEL,