Answer set format tool class. convert delimiter from spaces or tabs to bar('|') in TPC-DS answer set.
before convert, need to format TPC-DS result as following:
1. split answer set which has multi query results to multi answer set, includes query14, 23, 24, 39.
2. replace tabs by spaces in answer set by vim.
(1) cd answer_set directory
(2) vim 1.ans with command model,
:argdo %retab! |update
(3) save and quit vim.