DATA Step - WeAreCAS

In SAS^© Viya^™, the DATA step can operate on the CAS server in Symmetric Multiprocessing (SMP) or Massively Parallel Processing (MPP) mode, by default utilizing multithreading to execute the same program across multiple nodes. The use of in-memory CAS tables offers significant execution speeds. It is important to note that certain restrictions apply to language elements and the VARCHAR data type when executing on CAS. The BY statement, when used with the DATA step on CAS, ensures that groups of rows sharing the same BY variables remain intact and are processed together on a single machine. Some DATA step language elements from earlier SAS^© versions may not be suitable for distributed processing in the CAS environment.

Data Analysis

Type : CREATION_INTERNE

Examples use generated data (datalines) or SASHELP.

1 Code Block

DATA STEP / PROC PRINT Data

Explanation :
This example initializes a CAS session, defines a CAS library named 'mycas', then creates an in-memory table 'sample_data' using a DATA step with embedded data (DATALINES). Finally, the PROC PRINT procedure is used to display the content of the 'mycas.sample_data' table, demonstrating the execution of the DATA step and procedures on the CAS server.

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1	CAS;
2	LIBNAME mycas CAS;
3
4	DATA mycas.sample_data;
5	INPUT id $ value;
6	DATALINES;
7	A 10
8	B 20
9	C 30
10	;
11	RUN;
12
13	PROC PRINT DATA=mycas.sample_data;
14	TITLE 'Exemple de données sur CAS';
15	RUN;
16	QUIT;

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