SAS/ACCESS(R) 9.2 Interface to PC Files: Reference

Product	Release
SAS/ACCESS Interface to PC Files	9.2

File Format-Specific Reference for the IMPORT and EXPORT Procedures

SPSS SAV Files

All versions of SPSS under Microsoft Windows are supported. SPSS files have a .sav file extension. SPSS files that have short variable names are exported.

See: Example 1: EXPORT a SAS Data Set to an SPSS SAV File

SPSS Data Types

MISSING VALUES

SPSS supports missing values. SAS missing values are written as SPSS missing values.

VARIABLE NAMES

Only the short variable name style is supported. SPSS variable names can be up to eight characters in length. All alphabetic characters must be uppercase. The first character in a variable name can be an uppercase letter (A-Z), a dollar sign ($), or an "at" sign (@). Subsequent characters can be any of these characters, plus numerals (0-9), periods (.), number signs (#), or underscores ( _ ).

SPSS reserves 13 words, which are not allowed to stand alone as variable names: ALL, AND, BY, EQ, GE, GT, LE, LT, NE, NOT, OR, TO, and WITH. If the program encounters any of these as a variable name, it appends an underscore to the variable name to distinguish it from the reserved word. For example, ALL becomes ALL_ .

Invalid characters are converted to underscores unless they are encountered as the first character in a variable name. In that event, the "at" sign (@) is used instead. For example, %ALL becomes @ALL .

When you are exporting to SPSS, SAS variable names that are longer than eight characters are truncated to eight characters. If the new name is truncated and results in an existing name, the last character changes to a single digit (1,2, 3...) until the variable name becomes unique.

VALUE LABELS

SPSS stores value labels within the data file. The values are turned into format library entries as they are read with the IMPORT procedure. The name of the format includes its associated variable name, modified to meet the requirements of format names. The name of the format is also associated with a variable in the data set. You can use the FMTLIB=libref.format-catalog; statement to save the formats catalog in a specified SAS library.

The EXPORT procedure saves the value labels that are associated with the variables when writing to an SPSS file. The procedure uses the formats that are associated with the variables to retrieve the value entries. You can use the FMTLIB=libref.format-catalog statement to tell SAS the location of the format catalog.

VARIABLE LABELS

SPSS supports variable labels. the EXPORT procedure writes the variable name to an SPSS file as the label if the variable name is not a valid SPSS name and no label exists.

DATA TYPES

SPSS supports numeric and character field types that map directly to SAS numeric and character fields. This list shows other SPSS data types and how the IMPORT procedure converts them to SAS formats.

	Date, Jdate, Wkday, Qyr, Wkyr: Date, Jdate, Wkday, Qyr, Wkyr
	Datetime, Dtime: Converts to a SAS datetime value and SAS datetime format.
	Time: Converts to a SAS datetime value and SAS datetime format.
	Adate: Converts to a SAS date value in the mmddyy format.
	Moyr: Converts to a SAS date value in the mmmyy format.

When writing SAS data to an SPSS file, the EXPORT procedure converts data into SPSS variable types.

When exporting data, character fields have a maximum length of 256.

Numeric fields are 8-byte floating-point numbers, with these format conversions:

COMMA	Converts to SPSS format type comma.
DOLLAR	Converts to SPSS format type dollar.
DATE	Converts to SPSS format type date.
MMDDYY	Converts to SPSS format Adate.
MMMYY	Converts to SPSS format Moyr.
DATETIME	Converts to SPSS format Dtime.
TIME	Converts to SPSS format Time.

Example 1: EXPORT a SAS Data Set to an SPSS SAV File

This example exports the SAS data set, SDF.CUSTOMER, to the SPSS SAV file, customer.sav, on a local system.

LIBNAME SDF V9 "&sasdir";
PROC EXPORT DATA=SDF.CUSTOMER
            FILE="&tmpdir.customer.sav"
            DBMS=SPSS REPLACE;
RUN;

Example 2: IMPORT a SAS Data Set from an SPSS SAV File

This example imports the SAS data set, WORK.CUSTOMER, from the SPSS SAV file, customer.sav, on a local system.

PROC IMPORT OUT=WORK.CUSTOMER
            FILE="&tmpdir.customer.sav"
            DBMS=SPSS REPLACE;
RUN;

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