Generate SQLs that satisfy target cost or cardinality constraints.
(1) Generate target point queries (cardinality=1000):
python3 cal_time.py tpch card point 1000 1000
(2) Generate target range queries (cost in [1000, 2000]):
python3 cal_time.py tpch cost range 1000 1000 2000
**Note. The repo has moved to https://github.com/evolveDB/SQL-Generator