Deterministic and Non-deterministic Two approximate algorithms are offered for the approximate percentile functions: Non-deterministic: fastest method, whenever reproducibility is not required. This is the default method. Deterministic: slightly slower, but delivers deterministic results. Note that the differences will not be apparent with the small dataset in use here. REM Approximate median, NON DETERMINISTIC select approx_median(volume), approx_median(volume, 'ERROR_RATE' ) from approxt where state = 'CA' ; REM Approximate median, DETERMINISTIC select approx_median(volume deterministic), approx_median(volume deterministic, 'ERROR_RATE' ) from approxt where state = 'CA' ; REM Approximate percentile, DETERMINISTIC select approx_percentile( 0.1 deterministic) within group ( order by volume) from approxt where state = 'CA' ;
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