def test_connection(self, credential=None):
        raise NotImplementedError()
Compute least-squares solution to equation Ax = b.
dataset/ETHPy150Open globocom/database-as-a-service/dbaas/drivers/base.py/BaseDriver.test_connection--crossover with--dataset/ETHPy150Open scipy/scipy/scipy/linalg/basic.py/lstsq