TD_FTest構文 - Advanced SQL Engine - Teradata Database

SELECT * from TD_FTEST (
  [ ON { table | view | (query) } AS InputTable ]
  USING
  first_sample_specifier
  second_sample_specifier
  [ AlternativeHypothesis ({ 'lower-tailed' | 'upper-tailed' | 'two-tailed' })
  [ Alpha (alpha) ]
) AS alias;

first_sample_specifier

{ FirstSampleColumn ('sample_column_1') |
  FirstSampleVariance (variance_1)
  DF1 (degrees_of_freedom_first_sample)
}

second_sample_specifier

{ SecondSampleColumn ('sample_column_2') |
  SecondSampleVariance (variance_2)
  DF2 (degrees_of_freedom_second_sample)
}