TST: resolve most of future warnnings in SQL test, clean import (#43098)
TST: resolve most of future warnnings in SQL test, clean import (#43098)


pandas-dev/pandas,datapythonista/pandas,dsm054/pandas,rs2/pandas,datapythonista/pandas,dsm054/pandas,pandas-dev/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,rs2/pandas,rs2/pandas,dsm054/pandas,rs2/pandas,datapythonista/pandas,dsm054/pandas,datapythonista/pandas,dsm054/pandas,jorisvandenbossche/pandas,jorisvandenbossche/pandas