SAS

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, SAS Russia/CISdmitry.zvezhinsky@sas.com

. 1

mailto:dmitry.zvezhinsky@sas.com

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http://tiny.cc/msu_sas

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2

SAS University Edition

http://www.sas.com/en_us/software/university-edition.html

VirtualBox VMWare ,

( )

. SAS, SAS U.

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http://www.sas.com/en_us/software/university-edition.html

SAS University Edition

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My Folders = ./SASUniversityEdition/myfolders ) (

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My Folders. .

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(Log)

Log . SAS.

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. SAS BASE

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SAS, )

DATA( )

SAS PROC

SAS(

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SAS BASE

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SAS. . (SAS data set).

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DATA ( , , , ) PROC

( ) ( ). 7

SAS (datasets)

() ,

8 . 1 32767 .

32 : _ a-z 0-9

SAS ( , ) ( proc)

( -> Columns), : length (. - , ), name (), label (, , ), type (), format ( )

SAS dataset , (SQL) 8

SAS () (*.sas7bdat)

( excel/access ) (engines).

(xls csv SAS Studio; Code Snippets->Data->Import )

SAS Studio SAS (

) ( , .), .

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SAS , .

SAS , Work ( sas.exe) Sasuser ( ).

, SAS ( , excel, access). , ( ) .

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SAS U

1.

./SASUniversityEdition/myfolders My Folders.

2. SAS Studio .

11

:

wizard (Tools->assign project library) .. ( libname):

libname mylib c:\dir_with_data;mylib - : 0-9, a-z, _, , 8

sas.exe ( SAS U - Sign out, )

(c:\dir_with_data\testdataset.sas7bdat), 2- ( ):

mylib.testdataset Work Server list, :

proc contents data=sasuser._all_;run;

SAS U

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SAS Base options linesize=95 pagesize=52; data work.NewSalesEmps; length First_Name $ 12 Last_Name $ 18 Job_Title $ 25; infile 'newemps.csv' dlm=','; input First_Name $ Last_Name $ Job_Title $ Salary; run;

proc print data=work.NewSalesEmps; run; proc means data=work.NewSalesEmps; class Job_Title; var Salary; run;

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SAS Base

, SAS (#include)

, SAS

, ( data, proc)

( RUN)

; run;,

quit;, (

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(- pdf)http://support.sas.com/documentation

1) SAS BASE ( )

2) overview , ( PROC)

3) examples

4) *) SUGI ( )*) SAS

:SAS/STAT(R) 9.3 User's GuideSAS(R) 9.3 Functions and CALL Routines: ReferenceBase SAS(R) 9.3 Procedures Guide, Second EditionSAS(R) 9.3 SQL Procedure User's Guide 15

DATA ,

SQL (wiki: 1986 SQL ANSI, SAS 1966, 1976 ).

DATA SQL (SQL , DATA ). .

DATA SQL ( ), , .

SAS ( , , , , , , , , , , ...).

, DATA. DATA STEP: SAS(R) 9.3 Language Reference: Concepts, Second Edition -> DATA Step

Concepts SAS(R) 9.3 Language Reference: Concepts, Second Edition -> Dictionary of

Language Elements -> SAS Data Set Options 16

DATA :

?(. Overview of DATA Step Processing: Flow of Action)

data employees; set employee_list; run;

1) : - - (Program Data Vector,

PDV) , () , .

- ( ) ( , , .)

17

?

2) data. () SET , .

: ?

DATA data employees; set employee_list; run;

PDV:( )

VAR1 VAR2 VAR3

employees:( )

,

Data Set Name Observations

Member Type Variables ..

Engine .. Indexes

Created Observation Length

Last Modified Deleted Observations

VAR1 (Num) VAR2 (Char) VAR3 (Num)

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SET

data employees; set employee_list; run;

PDVVAR1 VAR2 VAR3

employeesData Set Name Observations Member Type Variables ..Engine .. Indexes Created Observation Length Last Modified Deleted Observations

VAR1 (Num) VAR2 (Char) VAR3 (Num)

Employee_listData Set Name Observations Member Type Variables ..Engine .. Indexes Created Observation Length Last Modified Deleted Observations

VAR1 (Num) VAR2 (Char) VAR3 (Num)

1 AAA 200

2 BBB 201

3 CCC 202

0. . 1. Set =

Employee_list PDV2. Output =

PDV employees3. Return =

DATA

1 AAA 200

1 AAA 200

2 BBB 201

2 BBB 201

3 CCC 202

3 CCC 202

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data employees; set employee_list; where age GT

< LT

>= GE

data employees; set employee_list; where age

1. DATA: IF expression THEN do;

; ;;

end;ELSE do;

;end;

2. ( switch-case):SELECT;

WHEN (when-expression-1) statement;

END;

select-when .22

DATA ( ):

Program Data Vector, , DATA. Bonus employee_list , PDV .

?1. (., , , )2. ,

(, ), .

data employees; set employee_list; if upcase(Country)='US' then Bonus = 500; else Bonus=0; run;

* . SAS(R) 9.3 Language Reference: Dictionary 23

* , function-name (argument-1)function-name (OF -) DATA PROC (, -) :SUM(argument,argument,... ) ( .)Sum + . a1 a2 temp?

UPCASE(argument) PUT(source, format.) (format)INPUT(source,informat.) (informat)

* : SAS(R) 9.3 Functions and CALL Routines: Reference

B (Num) C (Num)

. 1

data temp; set in_tab; a1=b+c; a2=sum(b,c); run;

in_tab

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SAS 01 1960 / (datetime) 01 1960 ( ) , , :

DATE SASDATEPART SAS /DATETIME / (timestamp)DAY : day ( 01jan2013d ) -> 1 ; day (19359) -> 1DHMS / (datetime) , , , .HMS SAS , HOUR /INTCK , (, , )INTNX , / , SASMDY , , : Mdy(1,1,2013) -> 19359MINUTE /MONTH QTR () SAS.TIME SASTIMEPART , , TODAY WEEK WEEKDAY YEAR YRDIF Returns the difference in years between two dates according to specified day count conventions; returns a persons age.

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