SAS Certified Adv Programmer 50 Questions (49)
Which one of the following SAS programs is the most efficient in producing and removing an index from a SAS data set?
a.
proc datasets lib=sasuser;
modify houses;
index create style;
index delete location;
quit;
b.
proc datasets lib=sasuser;
modify houses;
index delete location;
index create style;
quit;
c.
proc datasets lib=sasuser;
modify houses;
delete index location;
quit;
proc datasets lib=sasuser;
modify houses;
create index style;
quit;
d.
proc datasets lib=sasuser;
modify houses;
delete index location;
create index style;
quit;
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2 Comments »
B
B: we should delete the old index before creating a new one