The FIRST. And LAST. functions can be used to identify first or last observations by group in the SAS dataset. First.Variable : It assigns value 1 to the first observation and 0 to the rest of the observations within the group in a SAS dataset. Last.Variable: It assigns value 1 to the last observation and … Read more
Here are three different ways you can delete rows from SAS dataset. Each method has different ways to write a code, specify conditions based on that SAS deletes the rows from a dataset. Method 1: Use DATA STEP To Delete Rows In SAS /* delete rows if id>= 10 */ data new_dataset; set original_dataset; if … Read more
One of the most common activities and issues in data management is to deal with the duplicate rows. Your well established ETL processes might be executing for weeks or months but at some point it may fail due to duplicates. It can either be generated due to fault at source end or wrong logic written … Read more
The both nodupkey and nodup (noduprecs) options can be used in the proc sort procedure. The function of these two options seems similar but it isn’t. In general they remove duplicate rows but in a bit different manner. It’s very important know the difference before you try to delete duplicate rows. With nodupkey option SAS … Read more
In this article you’ll learn how to use the proc sort procedure in detail with 10+ examples. The proc sort procedure in SAS used to order the observations based on one or more variables. Furthermore, the proc sort can be used to remove duplicate observations from SAS dataset. The SORT procedure either replaces the original … Read more
The formats are used in the SAS (statistical analysis system) to determine how variable values to be displayed or written as output. There are plenty of built-in formats available in SAS such as date9., w10., comma10.2, MMDDYYw., etc. It is also allowed to create your own user-defined formats in SAS. You can set your own … Read more
The PROC MEANS procedure summarises data in descriptive statistics for variables across all the observations as well as within the groups of observations. You can compute statistics like calculating mean, standard deviation, minimum and maximum values, and many more statistical calculations. For example, PROC MEANS does the following: calculates descriptive statistics estimates quantiles, which includes … Read more