Base SAS 9.1.3 Procedures Guide - Acsu Buffalo

1017
CHAPTER
44
The SORT Procedure
Overview: SORT Procedure 1017
What Does the SORT Procedure Do? 1017
Sorting SAS Data Sets 1018
Syntax: SORT Procedure 1019
PROC SORT Statement 1019
BY Statement 1026
Concepts: SORT Procedure 1027
Multi-threaded Sorting 1027
Using PROC SORT with a DBMS 1027
Sorting Orders for Numeric Variables 1028
Sorting Orders for Character Variables 1028
Default Collating Sequence 1028
EBCDIC Order 1028
ASCII Order 1028
Specifying Sorting Orders for Character Variables 1029
Stored Sort Information 1029
Integrity Constraints: SORT Procedure 1029
Results: SORT Procedure 1030
Procedure Output 1030
Output Data Set 1030
Examples: SORT Procedure 1031
Example 1: Sorting by the Values of Multiple Variables 1031
Example 2: Sorting in Descending Order 1033
Example 3: Maintaining the Relative Order of Observations in Each BY Group 1035
Example 4: Retaining the First Observation of Each BY Group 1037
Overview: SORT Procedure
What Does the SORT Procedure Do?
The SORT procedure orders SAS data set observations by the values of one or more
character or numeric variables. The SORT procedure either replaces the original data
set or creates a new data set. PROC SORT produces only an output data set. For more
information, see “Procedure Output” on page 1030.
Operating Environment Information: The sorting capabilities that are described in this
chapter are available for all operating environments. In addition, if you use the HOST
value of the SAS system option SORTPGM=, you might be able to use other sorting
options that are available only for your operating environment. Refer to the SAS