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

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The LIBNAME Statement for PC Files on Microsoft Windows

NULLCHAR= Data Set Option



Indicates how SAS character missing values are handled during insert, update, and DBKEY= processing.
Valid in: DATA and PROC steps (when accessing PC files data using SAS/ACCESS software)
Default value: YES

Syntax
Syntax Description
Details

Syntax

NULLCHAR= YES | NO

Syntax Description

YES

indicates that character missing values in SAS data sets are treated as NULL values if the data source allows them. Otherwise, an error is returned.

NO

indicates that character missing values in SAS data sets are treated as the NULLCHARVAL= value (regardless of whether the data source allows NULLs for the column).


Details

This option affects insert and update processing and also applies when you use the DBKEY= option.

This option works in conjunction with the NULLCHARVAL= data set option, which determines what is inserted when NULL values are not allowed.

All SAS numeric missing values (represented in SAS as '.') are treated by the data source as NULLs.

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