这是偶的:
NOTE: Copyright (c) 2002-2010 by SAS Institute Inc., Cary, NC, USA.
NOTE: SAS (r) Proprietary Software 9.3 (TS1M0)
Licensed to LICENCE GRATUITE EAS + MINER DESKTOP WIN 64 BITS, Site 70109267.
NOTE: This session is executing on the X64_7HOME platform.
NOTE: SAS initialization used:
real time 5.42 seconds
cpu time 0.95 seconds
1 data one;
2 do i=1 to 100000000;
3 output;
4 end;
5 run;
NOTE: The data set WORK.ONE has 100000000 observations and 1 variables.
NOTE: DATA statement used (Total process time):
real time 10.29 seconds
cpu time 6.41 seconds
NOTE: The data set WORK.ONE has 100000000 observations and 1 variables.
NOTE: DATA statement used (Total process time):
real time 52.84 seconds
cpu time 11.66 seconds
怎么都这么快
data one;
463
464 do i=1 to 100000000;
465
466 output;
467
468 end;
469
470 run;
NOTE: The data set WORK.ONE has 100000000 observations and 1 variables.
NOTE: DATA statement used (Total process time):
real time 13.72 seconds
cpu time 7.33 seconds