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SAS interview questionsBy admin| October 12, 2004
1. What SAS statements wou! you co!e to rea! an e"terna raw !ata #ie to a $ATA ste%&
2. 'ow !o you rea! in the variabes that you nee!&
(. Are you #amiiar with s%ecia in%ut !eimiters& 'ow are they use!&
4. I# rea!in) a variabe en)th #ie with #i"e! in%ut, how wou! you %revent SAS #rom rea!in) the ne"t recor!
i# the ast variabe !i!n*t have a vaue&
+. What is the !i##erence between an in#ormat an! a #ormat& ame three in#ormats or #ormats.
-. ame an! !escribe three SAS #unctions that you have use!, i# any&
. 'ow wou! you co!e the criteria to restrict the out%ut to be %ro!uce!&
/. What is the %ur%ose o# the traiin) & The & 'ow wou! you use them&
. n!er what circumstances wou! you co!e a S335T construct instea! o# I6 statements&
10. What statement !o you co!e to te SAS that it is to write to an e"terna #ie& What statement !o you co!e
to write the recor! to the #ie&
11. I# rea!in) an e"terna #ie to %ro!uce an e"terna #ie, what is the shortcut to write that recor! without
co!in) every sin)e variabe on the recor!&
12. I# you*re not wantin) any SAS out%ut #rom a !ata ste%, how wou! you co!e the !ata statement to %revent
SAS #rom %ro!ucin) a set&
1(. What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&
14. 'ave you ever in7e! SAS co!e& I# so, !escribe the in7 an! any re8uire! statements use! to either %rocess
the co!e or the ste% itse#.
1+. 'ow wou! you incu!e common or reuse co!e to be %rocesse! aon) with your statements&
1-. When oo7in) #or !ata containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate that
!ata9 scan, in!e", or in!e"c&
1. I# you have a !ata set that contains 100 variabes, but you nee! ony #ive o# those, what is the co!e to #orce
SAS to use ony those variabe&
1/. 5o!e a :;O5 SO;T on a !ata set containin) State, $istrict an! 5ounty as the %rimary variabes, aon) with
severa numeric variabes.
1. 'ow wou! you !eete !u%icate observations&
20. 'ow wou! you !eete observations with !u%icate 7eys&
21. 'ow wou! you co!e a mer)e that wi 7ee% ony the observations that have matches #rom both sets.
http://www.techinterviews.com/author/admin/http://www.techinterviews.com/author/admin/http://www.techinterviews.com/author/admin/8/13/2019 61143031 SAS Interview Questions
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22. 'ow wou! you co!e a mer)e that wi write the matches o# both to one !ata set, the non
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3. Ravi Awari
:oste! 10C24C200- at /90 am |Permalink
1(. What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&
Ans? S3T
4. VinoSwarna
:oste! 11C/C200- at 1090 %m |Permalink
What SAS statements wou! you co!e to rea! an e"terna raw !ata #ie to a $ATA ste%&
Ans9
$ata DDDE
in#ie @yyy*E
in%ut F..E
runE
'ow !o you rea! in the variabes that you nee!&Ans9 !ro% an! 7ee%.
Are you #amiiar with s%ecia in%ut !eimiters& 'ow are they use!&
Ans9 $S$ !mmissover %a!.
I# rea!in) a variabe en)th #ie with #i"e! in%ut, how wou! you %revent SAS #rom rea!in) the ne"t recor! i#
the ast variabe !i!nGHJKLHt have a vaue&
Ans9 Missover
What is the !i##erence between an in#ormat an! a #ormat& ame three in#ormats or #ormats.
Ans9 in#ormat to rea! the !ate. 6ormat to write the !ata.In#ormats9 comma. !oar. !ate.
6ormats can be same as in#ormats
ame an! !escribe three SAS #unctions that you have use!, i# any&
mean>?!ate>?
to!ay>?
'ow wou! you co!e the criteria to restrict the out%ut to be %ro!uce!&
Ans9 no%rint
What is the %ur%ose o# the traiin) & The & 'ow wou! you use them&
Ans9 ho! the vaue %ast the !ata ste%.
ho! the vaue ti a in%ut statement or en! o# the ine
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n!er what circumstances wou! you co!e a S335T construct instea! o# I6 statements&
Ans9 i# there are many mutuay e"cusive con!itions
What statement !o you co!e to te SAS that it is to write to an e"terna #ie& What statement !o you co!e to
write the recor! to the #ie&
Ans9 !ata nuset """E
#ie @NNN*E
%ut vv ii nnoo!!E
runE
I# rea!in) an e"terna #ie to %ro!uce an e"terna #ie, what is the shortcut to write that recor! without co!in)
every sin)e variabe on the recor!&
I# youGHJKLHre not wantin) any SAS out%ut #rom a !ata ste%, how wou! you co!e the !ata statement to
%revent SAS #rom %ro!ucin) a set&
What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&
Ans9 set
'ave you ever in7e! SAS co!e& I# so, !escribe the in7 an! any re8uire! statements use! to either %rocess
the co!e or the ste% itse#.
'ow wou! you incu!e common or reuse co!e to be %rocesse! aon) with your statements&
When oo7in) #or !ata containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate that
!ata9 scan, in!e", or in!e"c&
I# you have a !ata set that contains 100 variabes, but you nee! ony #ive o# those, what is the co!e to #orce
SAS to use ony those variabe&
5o!e a :;O5 SO;T on a !ata set containin) State, $istrict an! 5ounty as the %rimary variabes, aon) with
severa numeric variabes.
'ow wou! you !eete !u%icate observations&
'ow wou! you !eete observations with !u%icate 7eys&
'ow wou! you co!e a mer)e that wi 7ee% ony the observations that have matches #rom both sets.
Ans9 !ata """mer)e yyy>in in"""? >in in?
by aaaE
i# in""" 1 an! inyyy 1E
runE
'ow wou! you co!e a mer)e that wi write the matches o# both to one !ata set, the non
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ame statements that are e"ecution ony.
In the #ow o# $ATA ste% %rocessin), what is the #irst action in a ty%ica $ATA Ste%&
Ans9 set the variabes to missin).
What is n&
Ans9 SAS variabe to count the no o# obs rea!.
5. Mo!an
:oste! 11C22C200- at 11912 am |Permalink
I# you have a !ata set that contains 100 variabes, but you nee! ony #ive o# those, what is the co!e to #orce
SAS to use ony those variabe&
Ans9 use the !ata ste% o%tion OBS+
5o!e a :;O5 SO;T on a !ata set containin) State, $istrict an! 5ounty as the %rimary variabes, aon) with
severa numeric variabes.
Ans9 :;O5 SO;T
!ata out E
BN 5ountry State $istrictE
;E
'ow wou! you !eete !u%icate observations&
Ans9 use :;O5 SO;T with the o%tion O$:
'ow wou! you !eete observations with !u%icate 7eys&
Ans9 use :;O5 SO;T with the o%tion O$:R3N
6. Mo!an
:oste! 11C22C200- at 1191+ am |Permalink
I# you have a !ata set that contains 100 variabes, but you nee! ony #ive o# those, what is the co!e to #orceSAS to use ony those variabe&
Ans9 Sorry, my a%oo)ies #or the above answer #or this 8uestion. The correct answer is
use R33: o%tion in the S3T statement o# the $ATA ste%
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7. t!i"a#arajan
:oste! 12C20C200- at /9(/ am |Permalink
'i A,
1?5an you %ease te me the ist o# com%ie time statements&
2?I have 100 observations #rom that i want to create + !atasets i7e a1,a2,a(,a4,a+.3ach !ata set shou!
contain 20 observation each.6or e".a1 wou! contain 1 to 20 obs an! a2 wou! contain 21
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10. kavit!a
:oste! 1C1/C200 at 11921 am | Permalink
hi
is the #oowin) co!e ri)ht #or #oowin) 8uestion&
'ow wou! you co!e a mer)e that wi write the matches o# both to one !ata set, the non
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12. kavit!a
:oste! 1C1/C200 at 119(/ am |Permalink
At com%ie time when a SAS !ata set is rea!, what items are create!&
1. in%ut bu##er
2. :ro)ram $ata =ector >:$=?
(. $escri%tor In#ormation
13. kavit!a
:oste! 1C1/C200 at 1194- am |Permalink
When oo7in) #or !ata containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate that
!ata9 scan, in!e", or in!e"c&
ans9 In!e" wi )ive you the %osition
14. kavit!a
:oste! 1C1C200 at 119+1 am |Permalink
can anyone %ease te me i# there is a sas user )rou% or !iscussion #orum near #air#a", va
15. $is!ore $u%ar&$anikat(a
:oste! (C2+C200 at 2914 %m |Permalink
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1(. What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&
Ans9< O%tions
16. $is!ore $u%ar&$anikat(a
:oste! (C2+C200 at 291/ %m |Permalink
'ow !o you rea! in the variabes that you nee!&
sin) in%ut statement.
17. Arun Mat!ura&) sai*
:oste! 4C(C200 at -94/ am |Permalink
I have 100 observations #rom that i want to create + !atasets i7e a1,a2,a(,a4,a+.3ach !ata set shou! contain
20 observation each.6or e".a1 wou! contain 1 to 20 obs an! a2 wou! contain 21
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19. SIVA
:oste! 4C10C200 at 90/ am |Permalink
data a1 a2 a3 a4 a5;
set x;
select;
when (_n_ le 20) output a1;
when (20
20. siva
:oste! 4C10C200 at 91( am |Permalink
At com%ie time when a SAS !ata set is rea!, what items are create!&
Whie rea!in) a SAS !ata set the in%ut bu##er wi not be create!. It wi be create! ony when the e"terna
!ata is rea!. So when a sas !ata set is rea!:$= an! the !escri%tor %ortion wi ony be create!.
21. rao
:oste! 4C1C200 at 94 %m |Permalink
1? what is !i##erence between SAS=/.0 an! SAS=.0&
2? u r creatin) Macro variabe where we have to store! it&
(? what is !i##erence between SAS !ebu))in) an! Macro !ebu))in)&
4?what is the #eature o# S3T statements&
+?what is the #eature o# mer)e statements&
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i# ina1 an! inb1 then out%ut oneE
i# ina1 an! inb0 then out%ut twoE
i# ina0 an! inb1 then out%ut threeE
runE
24. Monta,er
:oste! +C(C200 at 90 am |Permalink
I wou! i7e to estimate a Tobit mo!e on %ane !ata. :;O5 XIM is su%%ose! to be the a%%ro%riate
%roce!ure. But !i! not #in! any !etais on how to te :;O5 XIM that I am usin) %ane !ata. 5ou! you
min! he%in) me %ease&
25. sanni!i
:oste! +C14C200 at 904 %m |Permalink
hi
Yet A (
Yet B 4
Yet 5 VA Z VB
Yet 5 V5
What is the vaue o# Y:ut statement&
:ease )ive me the answer.
26. ravi
:oste! +C21C200 at 11944 am |Permalink
hi
Yet A (
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Yet B 4
Yet 5 VA Z VB
Yet 5 V5
What is the vaue o# Y:ut statement&
:ease )ive me the answer.c(Z4
27. 'au(
:oste! +C2+C200 at 49+0 %m |Permalink
Aso #irstobs an! obs are !ataset contro o%tions. ot e"ecution time statements. This co!e wi never wor7.
A more #easibe answer is to !o this9
Y[sets u% a bo)us !atasourceE
!ata "E
!o i1 to 100E
""*Nour $ata*E
en!E
runE
Y[accom%ishes the tas7E
!ata a1 a2 a( a4 a+E
set "E
cntZ1E %ut cntEi# 07avitha sai!,
I have 100 observations #rom that i want to create + !atasets i7e a1,a2,a(,a4,a+.3ach !ata set shou! contain
20 observation each.6or e".a1 wou! contain 1 to 20 obs an! a2 wou! contain 21
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28. 'au(
:oste! +C2+C200 at 49+1 %m |Permalink
Y[accom%ishes the tas7E
!ata a1 a2 a( a4 a+E
set "E
cntZ1E %ut cntE
i# 0
29. -!arat!
:oste! C1-C200 at 129+ am |Permalink
hi,
these is bharath,iam earnin) sas wi anyone )ive me the answers #or these 8uetions .% #orwar! me
1.name statments that #unctions at both com%ie V e"ecution time &
2.namestatments that are e"ecution ony &(.what is the !i##erence between var A1? &
+.wat is the si)ni#icance o# the @O6* in " sum >O6 a1
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2? u r creatin) Macro variabe where we have to store! it&
ans9 it !e%en!s on you, i# u want to ma7e them as reusabe com%onents u can save them in one %ertucuar
ocation an! u can ca them by usin) Yincu!e.
(? what is !i##erence between SAS !ebu))in) an! Macro !ebu))in)&
AS9 !ebu))in) is !ebu))in. no i!ea.4?what is the #eature o# S3T statements&
ans9 you can a%%y trans#ormations an! u can even oa! the !ata.
one im%ortance9 its a techni8ue to im%rove the e##iciency o# sas %ro)rams.
+?what is the #eature o# mer)e statements&
One sim%e answer is u can %er#orm a ty%es o# ]oins.
31.nvv
:oste! /C14C200 at 91/ am |Permalink
'ow wou! you co!e a mer)e that wi write the matches o# both to one !ata set, the non
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33. %a!u
:oste! C21C200 at /92- am |Permalink
X9what is the !i##erence between !s! an! missover&
X9with out !ata set name create !ata set & it is %ossibe&
34. A$A
:oste! 12C11C200 at -910 %m |Permalink
X9what is the !i##erence between !s! an! missover&
missover %revents a sas %ro)ram #rom )oin) to a new in%ut ine i# it !oesnot #in! vaues in the current ine
#or a the in%ut variabes.
X9with out !ata set name create !ata set & it is %ossibe&
!ata E
35. A$A
:oste! 12C11C200 at -9++ %m |Permalink
'ow !oes SAS han!e missin) vaues in9 assi)nment statements, #unctions, a mer)e, an u%!ate, sort or!er,
#ormats, :;O5s&
'ow many missin) vaues are avaiabe& When mi)ht you use them& 'ow !o you test #or missin) vaues&
'ow are numeric an! character missin) vaues re%resente! internay&
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36. A$A
:oste! 12C11C200 at -9+- %m |Permalink
'ow !o you ma7e use o# #unctions&
When oo7in) #or containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate that
!ata9 scan, in!e", or in!e"c&
What is the si)ni#icance o# the @O6* in DSM>O6 a1a,b,c,!?E&
There is a #ie! containin) a !ate. It nee!s to be !is%aye! in the #ormat !!monyy i# it*s be#ore 1+,
!!monccyy i# it*s a#ter 1/+, an! as @$isco Nears* i# it*s between 1+ an! 1/+. 'ow wou! you accom%ish
this in !ata ste% co!e& sin) ony :;O5 6O;MAT.
In the #oowin) $ATA ste%, what is nee!e! #or @#raction* to %rint to the o)& !ata nuE "1C(E i# ".((((
then %ut @#raction*E runE
What is the !i##erence between cacuatin) the @mean* usin) the mean #unction an! :;O5 M3AS&
37. )owri
:oste! 1C10C200/ at 29++ am | Permalink
When oo7in) #or containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate that !ata9
scan, in!e", or in!e"c&
Ans9 I$3D #unction. Scan ]ust sub strin)s the !ata an! I$3D5 oo7s #or one char. What is the si)ni#icance o# the GHJKPQO6GHJKLH in DSM>O6 a1
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In the #oowin) $ATA ste%, what is nee!e! #or GHJKPQ#ractionGHJKLH to %rint to the o)& !ata nuE
"1C(E i# ".(((( then %ut GHJKPQ#ractionGHJKLHE runE
Ans9 6;A5Tw. #ormatcna be use! to accom%ish this
38. +avi
:oste! +C1C200/ at 1092- %m |Permalink
1.What SAS statements wou! you co!e to rea! an e"terna raw !ata #ie to a $ATA ste%&
Answer9 I6I3 statement is use! to rea! the e"terna raw !ata #ie to a $ata Ste%.
2. 'ow !o you rea! in the variabes that you nee!&
Answer9 ist the variabe names a#ter I:T statement.
(. Are you #amiiar with s%ecia in%ut !eimiters& 'ow are they use!&
Answer9 Nes, sin) I:T statement an! $Mo%tion an! $S$ o%tin to rea! !eimite! #ie.
4. I# rea!in) a variabe en)th #ie with #i"e! in%ut, how wou! you %revent SAS #rom rea!in) the ne"t recor!
i# the ast variabe !i!nGHJKLHt have a vaue&
Answer9 sin) MISSO=3; o%tion in I6I3 statement.
+. What is the !i##erence between an in#ormat an! a #ormat& ame three in#ormats or #ormats.
Answer9 In#ormat )ives SAS s%ecia instruction #or rea!in) a variabe, an! 6ormat )ives SAS s%ecia
instruction #or writin) a variabe.
6or e"am%e9 $AT3w. w. w.!
-. ame an! !escribe three SAS #unctions that you have use!, i# any&
Answer9 $AN>!ate? To!ay>? SBST;>A;^,:OSITIO,?SM>?. 'ow wou! you co!e the criteria to restrict the out%ut to be %ro!uce!&
Answer9 sin) W'3;3 statement
/. What is the %ur%ose o# the traiin) & The & 'ow wou! you use them&
Answer9 Both are ine ho! s%eci#iers, the !i##erence is how on) they ho! a ine #or in%ut, The traiin) is
use! to ho! the ine o# the raw !ata #or subse8uent I:T statements, but reeases that ine when SAS
returns to the to% o# $ATA ste%, the traiin) wi ho! the ine even when SAS starts bui! a new
obsrvation.
. n!er what circumstances wou! you co!e a S335T construct instea! o# I6 statements&
Answer9
10. What statement !o you co!e to te SAS that it is to write to an e"terna #ie&
Answer9 sin) nu statement11. What statement !o you co!e to write the recor! to the #ie&
Answer9 sin) 6I3 an! :T statements
12. I# rea!in) an e"terna #ie to %ro!uce an e"terna #ie, what is the shortcut to write that recor! without
co!in) every sin)e variabe on the recor!&
Answer9 sin) 3D:O;T %roce!ure
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1(. I# youGHJKLHre not wantin) any SAS out%ut #rom a !ata ste%, how wou! you co!e the !ata statement
to %revent SAS #rom %ro!ucin) a set&
Answer9
14. What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&
Answer9 Where statement1+. 'ave you ever in7e! SAS co!e& I# so, !escribe the in7 an! any re8uire! statements use! to either
%rocess the co!e or the ste% itse#.
1-. 'ow wou! you incu!e common or reuse co!e to be %rocesse! aon) with your statements&
MI5;O
39. j"otsna&)
:oste! -C2+C200/ at +91+ am |Permalink
1.what is the !i##erence between !s! an! missover&
2.^ive some in#ormation about IOS5 &
(.What is the roe o# n an! nu &
40. aja"sin!a
:oste! -C2C200/ at /9(- %m |Permalink
1?What SAS statements wou! you co!e to rea! an e"terna raw !ata #ie to a $ATA ste%&
ans?in#ie statement
2?'ow !o you rea! in the variabes that you nee!&
ans?use var
i7e %roc %rint !ataerE
varnumE
runE(?Are you #amiiar with s%ecia in%ut !eimiters& 'ow are they use!&
ans?yes . !m*,dE or !m* @Eetc
4?I# rea!in) a variabe en)th #ie with #i"e! in%ut, how wou! you %revent SAS #rom rea!in) the ne"t recor!
i# the ast variabe !i!nGHJKLHt have a vaue&
ans?use s%eci#ic en)th or #ormat
i7e in%ut num . char +.E
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+?What is the !i##erence between an in#ormat an! a #ormat& ame three in#ormats or #ormats.
ans?in#ormat is use! to %rint the !ata #rom the !ataset by ommitn) some vaues whereas #ormat rea!s a !ata
!i##ernty then what is actuay store! in the !ataset by a!!in) our own vaues.
!ate, !!mmyy an! wor!!ate
-?ame an! !escribe three SAS #unctions that you have use!, i# any&ans?asum>a,b,c?E
so)>a?E
!a)>a?E
?'ow wou! you co!e the criteria to restrict the out%ut to be %ro!uce!&
ans? use #ormat
/?What is the %ur%ose o# the traiin) & The & 'ow wou! you use them&
ans? is coumn %ointer to )et the s%eci#ic vaue whie is use! i# variabes are ess an! vaue are more
an! u want to rea! each vaue
in%ut @content9* a . b +.E
in%ut a b c E
?n!er what circumstances wou! you co!e a S335T construct instea! o# I6 statements&
ans? when u want to use a )rou%
10?What statement !o you co!e to te SAS that it is to write to an e"terna #ie&
ans?o!s or !ata#ie
11?What statement !o you co!e to write the recor! to the #ie&
ans?!!e
12?I# rea!in) an e"terna #ie to %ro!uce an e"terna #ie, what is the shortcut to write that recor! without
co!in) every sin)e variabe on the recor!&
ans?!!e an! o!s
1(?I#youGHJKLHre not wantin) any SAS out%ut #rom a !ata ste%, how wou! you co!e the !ata statement to
%revent SAS #rom %ro!ucin) a set&
ans? !ata nuE
14?What is the one statement to set the criteria o# !ata that can be co!e! in any ste%&ans?set
1+?'ave you ever in7e! SAS co!e& I# so, !escribe the in7 an! any re8uire! statements use! to either
%rocess the co!e or the ste% itse#.
ans?use macro
1-?'ow wou! you incu!e common or reuse co!e to be %rocesse! aon) with your statements&
ans?usin) #ormat
1?When oo7in) #or !ata containe! in a character strin) o# 1+0 bytes, which #unction is the best to ocate
that !ata9 scan, in!e", or in!e"c&
ans?scan
1/?I# you have a !ata set that contains 100 variabes, but you nee! ony #ive o# those, what is the co!e to
#orce SAS to use ony those variabe&ans?in in%ut statement use ony those variabes name which u want.
1?5o!e a :;O5 SO;T on a !ata set containin) State, $istrict an! 5ounty as the %rimary variabes, aon)
with severa numeric variabes.
ans?%roc sort !ata8E
by stateE
runE
simiary other statements
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20?'ow wou! you !eete !u%icate observations&
ans?usin) !u%7ey
21?'ow wou! you co!e a mer)e that wi 7ee% ony the observations that have matches #rom both sets.
ans?usnin) mer)e an! !u%7ey
22?'ow wou! you co!e a mer)e that wi write the matches o# both to one !ata set, the non
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%ro)ram #or vauation
I6O;MATs can be use! with the I:T>? #unction, an! 6O;MAT with the :T>? #unction.
/?What is the %ur%ose o# the traiin) & The & 'ow wou! you use them&
SAS %rovi!es two ine? ho!s the in%ut recor! #or the e"ecution o# the ne"t I:T statement.The !oube traiin) at si)n >? ho!s the in%ut recor! #or the e"ecution o# the ne"t I:T statement, even
across iterations o# the $ATA ste%.
in%ut ame 20. E or in%ut ame 20. E
?n!er what circumstances wou! you co!e a S335T construct instea! o# I6 statements&
When you have a on) series o# mutuay e"cusive con!itions an! the com%arison is numeric, usin) a
S335T )rou% is si)hty more e##icient than usin) a series o# I6
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i# /1 e n e 100 then ou%ut a+E
runE
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