July 2011
Intermediate to advanced
802 pages
19h 12m
English
Content preview from SAS Certification Prep Guide: Base Programming for SAS 9, Third Edition
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Chapter Summary
Text Summary
How SAS Stores Date and Time Values
SAS
stores dates as numeric SAS date values, which represent the number
of days from January 1, 1960. SAS time values are the number of
seconds since midnight.
Reading Dates and Times with Informats
Use
SAS informats to read date and time expressions and convert them to
SAS date and time values.
-
MMDDYYw. reads dates such as 053090, 05/30/90, or 05 30 1990.
-
DATEw. reads dates such as 30May1990, 30May90, or 30-May-1990.
-
TIMEw. reads times such as 17:00, 17:00:01.34, or 2:34.
-
DATETIMEw. reads dates and times such as 30May1990:10:03:17.2, 30May90 10:03:17.2, or 30May1990/10:03.
Two-digit year values require special consideration. When a two-digit year ...
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