SAS Functions by Example - Herman Lo

7/25/2019 SAS Functions by Example - Herman Lo

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Examples fromExamples fromSAS Functions bySAS Functions by

ExampleExampleRon CodyRon Cody

Herman LoHerman Lo

Technical Analyst, RBC CapitalTechnical Analyst, RBC Capital


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AgendaAgenda

Book StructureBook Structure

Examples from the BookExamples from the Book

Character Functions (CATS, CATXCharacter Functions (CATS, CATX

!ate an" Time Functions (#$TC%, #$T$X!ate an" Time Functions (#$TC%, #$T$X

!escripti&e Stats (#'R, SMAEST)AR*EST!escripti&e Stats (#'R, SMAEST)AR*EST

Special Functions (#$+T, +TSpecial Functions (#$+T, +T

Macro Functions (CA S-M+T, CAMacro Functions (CA S-M+T, CAS-M+TXS-M+TX

The .er"ictThe .er"ict


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Book StructureBook Structure

T/C 0 ist of ChaptersT/C 0 ist of Chapters ist of +ro1ramsist of +ro1rams At the 2e1innin1 of each chapterAt the 2e1innin1 of each chapter

ist of Functionsist of Functions

#nsi"e each chapter#nsi"e each chapter For each functionFor each function

+urpose+urpose SyntaxSyntax Examples)Anticipate" /utputsExamples)Anticipate" /utputs

A Sample +ro1ramA Sample +ro1ram At the 2ackAt the 2ack

ist of Functionsist of Functions #n"ex (Alpha2etical#n"ex (Alpha2etical


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Character FunctionsCharacter Functions

CATS(string-1, string-2 )CATS(string-1, string-2 ) 3oins strin1s, strippin1 2oth lea"in1 an" trailin13oins strin1s, strippin1 2oth lea"in1 an" trailin1

2lanks2lanks

CATX(string-1, string-2 )CATX(string-1, string-2 ) 3oins strin1s, strippin1 2oth lea"in1 an" trailin13oins strin1s, strippin1 2oth lea"in1 an" trailin12lanks, an" a"" a space in 2et4een them2lanks, an" a"" a space in 2et4een them

ExampleExample

A 5 6Star7A 5 6Star7

B 5 68ars7B 5 68ars7

CATS(A, B 5 6Star8ars7CATS(A, B 5 6Star8ars7

CATX(A, B 5 6Star 8ars7CATX(A, B 5 6Star 8ars7

(See +19 :;


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ate and !ime Functionsate and !ime Functions

INTCK(interval ReturnsReturns numbernumberofof IntervalsIntervals 2et4een2et4een

%ate1%ate1

an"an"

%ate2%ate2

&ate1 an% &ate2&ate1 an% &ate2 can 2ecan 2e date, time, datetimedate, time, datetime&alues&alues datedate>> $'1N2'''$%$'1N2'''$%

time:time: $*+1+'*$T$*+1+'*$T

datetimedatetime+$'1N2'''+*+1+'*$&T+$'1N2'''+*+1+'*$&T

Interval T"e unit .# t"e intervalInterval T"e unit .# t"e interval Interval(Interval(datedate) &A/, 0K, 0K&A/, ) &A/, 0K, 0K&A/,

Interval(Interval(timetime) SCN&, MINT, 34) SCN&, MINT, 34

Interval(Interval(datetimedatetime) &T&A/, &T0K, &T0K&A/, ) &T&A/, &T0K, &T0K&A/,


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INTCK(interval%ate1,%ate2)%ate1,%ate2) MultipleMultiple(optional)(optional) "ultiple"ultiple ofof intervalintervalunitunit

!A-:? 5 :?

S"i#t(optional)(optional) starting pointstarting point ofof intervalinterval Meanin1 of S"i#t"epen"s on the Interval

Interval/A4,SMI/A4,5T4,MNT3 S"i#t5 MNT3 -EAR@9 5 @


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INTCK(interval%ate1,%ate2)%ate1,%ate2)

ExamplesExamples

INTCK(/A4!6$,$'MA/2''2$%, $172''2$%)1INTCK(/A4!6$,$'MA/2''2$%, $172''2$%)1

INTCK(0K$,$'1AN1*8'$%, $'9AN1*8'$%)1INTCK(0K$,$'1AN1*8'$%, $'9AN1*8'$%)1

?3A$D? is a Sun"ay, so the 4eek counter is tri11ere"?3A$D? is a Sun"ay, so the 4eek counter is tri11ere"

2ecause "efault 8EE% startin1 point is Sun"ay92ecause "efault 8EE% startin1 point is Sun"ay9

CAREF>CAREF>

Results may surprise you (oG


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INTNX(interval$,start-INTNX(interval$,start-

%ate,in:re;ent


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escripti#e Statsescripti#e Stats

I54(


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escripti#e Statsescripti#e Stats

SMA77ST=7A4>ST(N,ST(N,ST(1,X1,X2,X,X9)7A4>ST(1,X1,X2,X,X9)


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Special FunctionsSpecial Functions

IN?T(value, in#.r;at)IN?T(value, in#.r;at) +erforms character


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Special FunctionsSpecial Functions?ri;arB #un:ti.ns+ ?T, IN?T?ri;arB #un:ti.ns+ ?T, IN?T

?4C D4MAT?4C D4MAT

@A7 ITM@A7 ITM

1A??7$1A??7$2?A4$2?A4$

>4A?$>4A?$

T34NKN0N$T34NKN0N$

@A7 ECST@A7 ECST

A$ F C$ $99!9$A$ F C$ $99!9$

&$ 12!$&$ 12!$

T34 T34

4N4N

&ATA TAG7&ATA TAG7

IN?T ITMHN C& E IN?T ITMHN C& E

ITMHNAM ITMHNAM PUTPUT(ITMHN, ITM!)(ITMHN, ITM!)

AMNT AMNT INPUT(PUTINPUT(PUT(C&, ECST!), *!)(C&, ECST!), *!)

&ATA7INS&ATA7INS

1 G1 G2 & X 9 C2 & X 9 C

?4C ?4INT &ATATAG7 NGS?4C ?4INT &ATATAG7 NGS

TIT7 J7isting .# &ata Set TAG7TIT7 J7isting .# &ata Set TAG7

4N4N

7isting .# &ata Set TAG77isting .# &ata Set TAG7

ITMHNITMHN C&C& ITMHITMH

NAMNAM

AMNTAMNT

11 GG A??7A??7 99!999!9

22 && ?A4?A4 12!''12!''

XX >4A?>4A? !!

99 CC NKN0NNKN0N 99!999!9


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"acro Functions"acro Functions CA77 S/M?T(;a:r.-var, :"ara:ter-value)CA77 S/M?T(;a:r.-var, :"ara:ter-value)

CA77 S/M?TX(;a:r.-var, :"ara:ter-value)CA77 S/M?TX(;a:r.-var, :"ara:ter-value)

Assi1ns a &alue to a macro &aria2le "urin1Assi1ns a &alue to a macro &aria2le "urin1

execution of !ATA stepexecution of !ATA step

CA S-M+TX> Blanks are not remo&e" fromCA S-M+TX> Blanks are not remo&e" from&alue 2efore assi1nment to macro &aria2le&alue 2efore assi1nment to macro &aria2le

CA S-M+TX> ea"in1 K trailin1 2lanks areCA S-M+TX> ea"in1 K trailin1 2lanks are

remo&e" from &alue 2efore assi1nment to macroremo&e" from &alue 2efore assi1nment to macro

&aria2le&aria2le

EIui&alent toEIui&alent to LletLletstatement in macro lan1ua1estatement in macro lan1ua1e


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.alue of 8#TBA$%S is


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File &'$ FunctionsFile &'$ Functions

File #)/ functions are use" to o2tain information a2out SAS "ataFile #)/ functions are use" to o2tain information a2out SAS "atasetssets

%si% ?N(%ata-set-na;e$


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File &'$ FunctionsFile &'$ Functions

ATT4C(%si%,$attriPute$)ATT4C(%si%,$attriPute$)

Returns theReturns the charactercharacter&alue of a character type attri2ute&alue of a character type attri2ute

i9e9i9e9 ATT4C(&SI&, s.rte%PB$)ATT4C(&SI&, s.rte%PB$)5 name of the B- &aria2le95 name of the B- &aria2le9

Empty if not sorte"9Empty if not sorte"9

ATT4N(%si%,$attriPute$)ATT4N(%si%,$attriPute$)

Returns theReturns the numericnumeric &alue of a character type attri2ute&alue of a character type attri2ute


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File &'$ FunctionsFile &'$ FunctionsLMAC4 NGS(&SN)LMAC4 NGS(&SN)

ID XIST(JO&SN) T3N &ID XIST(JO&SN) T3N &

&SI& ?N(JO&SN)&SI& ?N(JO&SN)

NGSATT4N(&SI&,AN/)NGSATT4N(&SI&,AN/)

NGSATT4N(&SI&,N7GS)NGSATT4N(&SI&,N7GS)

NGSATT4N(&SI&,N@A4S)NGSATT4N(&SI&,N@A4S)

N&N&

7S NGS!7S NGS!4C C7S(&SI&)4C C7S(&SI&)

LMN& NGSLMN& NGS

&ATA HN77H&ATA HN77H

LNGS(TAG7)LNGS(TAG7)

?T AN/?T AN/

?T N7GS?T N7GS

?T N@A4S?T N@A4S4N4N

ITMHNITMHN C&C& ITMHITMH

NAMNAM

AMNTAMNT

11 GG A??7A??7 99!999!9

22 && ?A4?A4 12!''12!''

XX >4A?>4A? !!

99 CC NKN0NNKN0N 99!999!9

7isting .# &ata Set TAG77isting .# &ata Set TAG7

A$-5 (in"icates that "ataset has 2oth o2ser&ations an" &aria$/BS5@ ("ataset has @ lo1ical o2ser&ations

$.ARS5@ ("ataset has @ &aria2les

SAS L$%


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!he (erdict!he (erdict

The 2ook is an excellent an"2ookThe 2ook is an excellent an"2ook

on SAS Functionson SAS Functions

$e4 SAS9 Functions are$e4 SAS9 Functions are

"emonstrate""emonstrate"

8hat # 4ish it has>8hat # 4ish it has>An associate" 4e2 resource)soft4areAn associate" 4e2 resource)soft4are

help manual for ease of lookuphelp manual for ease of lookup

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SAS Functions by Example - Herman Lo