How are dates written in SAS?

How are dates written in SAS?

SAS date values are written in a SAS program by placing the dates in single quotes followed by a D. The date is represented by the day of the month, the three letter abbreviation of the month name, and the year. For example, SAS reads the value ’17OCT1991’D the same as 11612, the SAS date value for 17 October 1991.

How dates are stored in SAS?

SAS dates are stored as simple integer numbers. SAS time/datetimes are stored as decimal numbers to include 10th and 100th of seconds. For time values the integer part is the number of seconds from midnight. For datetime the integer part equals the number of seconds from January 1,1960.

Can you compare dates in SAS?

Assuming you have SAS dates, yes you can, but you need to specify dates as a date literal in the date9 format. Or use the MDY function.

What are SAS dates?

SAS date value is a value that represents the number of days between January 1, 1960, and a specified date. SAS can perform calculations on dates ranging from A.D. 1582 to A.D. 19,900. Dates before January 1, 1960, are negative numbers; dates after are positive numbers.

How do I compare two date variables in SAS?

Here’s how to check if two datasets in SAS are the same:

1. Start the comparison procedure with the PROC COMPARE statement.
2. Use the BASE=-option to specify the name of the first dataset.
3. Use the COMPARE=-option to specify the name of the second dataset.
4. Finish and execute the procedure with the RUN statement.

Can SAS date values be negative?

While SAS can include negative number dates (before the zero point), Excel cannot. Therefore, a date prior to January 1, 1900 will be a missing date value unless this field is stored as a character variable.

How do you compare in SAS?

How do you compare two observations in SAS?

Program Description

1. Declare the PROCLIB SAS library.
2. Set the SAS system options.
3. Sort the data sets by the ID variable.
4. Specify the data sets to compare.
5. Create the Result output data set and include all unequal observations and their differences.
6. Specify the ID variable.