Registering Data Sources - SAS Data Integration Studio 3.3 User's Guide - page 132

2 The next step populates preliminary data into the columns component of the
Columns Definitions window. To begin, click Auto Fill . The Auto Fill Columns
window displays, as shown in the following display.
Display 8.11 Auto Fill Columns Window
3 Change the value that was entered in the Start record field in the Guessing
records group box to 2 . This setting ensures that the guessing algorithm begins
with the second data record in the external file. The first data record in the file is
unique because it holds the column names for the file. Thus, all data that it
contains uses the character data type. The other rows in the file begin with a
character-based name, but the remaining values are numeric. Therefore, excluding
the first data from the guessing process yields more accurate preliminary data.
4 Accept all of the remaining default settings. Then, click OK to return to the
Column Definitions window.