Types of Data
are character or numeric values.
contains only numbers, and sometimes a decimal point, a minus sign, or both. When
they are read into a SAS data set, numeric values are stored in the floating-point
format native to the operating environment. Nonstandard numeric values can contain
other characters as numbers; you can use formatted input to enable SAS to read
is a sequence of characters.
are character or numeric values that can be read with list, column, formatted, or
named input. Examples of standard data include:
is data that can be read only with the aid of informats. Examples of nonstandard data
include numeric values that contain commas, dollar signs, or blanks; date and time
values; and hexadecimal and binary values.
Numeric data can be represented in several ways. SAS can read standard numeric values
without any special instructions. To read nonstandard values, SAS requires special
instructions in the form of informats. Table 19.1 on page 409 shows standard,
nonstandard, and invalid numeric data values and the special tools, if any, that are
required to read them. For complete descriptions of all SAS informats, see SAS Formats
and Informats: Reference.
Table 19.1 Reading Different Types of Numeric Data
Example of Numeric Data Description
Solution Required to
Standard Numeric Data
input right aligned None needed
input not aligned None needed
input left aligned None needed
Types of Data 409