How does SAS sort data?

How does SAS sort data?

With one BY variable, SAS sorts the data based on the values of that variable. With more than one variable, SAS sorts observations by the first variable, then by the second variable within categories of the first, and so on. A BY group is all the observations that have the same values of BY variables.

How do you remove duplicates in SAS?

The Sort Procedure with the NODUPKEY option is the simplest and most common way of removing duplicate values in SAS. Simply specify the NODUPKEY option in the PROC SORT statement. In the BY statement, specify the variables by which you want to remove duplicates.

How do I arrange columns in SAS?

So, how do you reorder variables in a SAS dataset? You change the position of a variable in a SAS dataset with a DATA Step and the RETAIN statement. The RETAIN statement must be placed before the SET statement and is followed by the column names in the desired order.

How do you descend order in Excel?

Sort quickly and easily

1. Select a single cell in the column you want to sort.
2. On the Data tab, in the Sort & Filter group, click. to perform an ascending sort (from A to Z, or smallest number to largest).
3. Click. to perform a descending sort (from Z to A, or largest number to smallest).

How do you sort sheets?

You can sort columns of cells alphabetically and numerically.

1. On your Android phone or tablet, open a spreadsheet in the Google Sheets app.
2. To select a column, tap a letter at the top.
3. To open the menu, tap the top of the column again.
4. Tap More .
5. Scroll down and tap SORT A-Z or SORT Z-A. Your data will be sorted.

Which is the correct order of sorting in SAS?

1. Sorting in SAS. Sorting in SAS is a process of a simple arrangement where data arranges in ascending or descending sort order. The default order of sorting is ascending (SAS Sort in ascending). The sorting of variable results in better analysis.

How are missing values sorted in SAS dataset?

If you list just one variable, then SAS will sort the observations in the dataset based on ascending values of that variable. Missing values are considered the smallest possible value or category. If sorting in ascending order, missing values will appear first.

How to sort by population densities in SAS?

The following example calculates population densities and then performs a sort on the calculated Density column: libname sql ‘ SAS-library ‘; proc sql outobs=12; title ‘World Population Densities per Square Mile’; select Name, Population format=comma12., Area format=comma8.,

Which is an example of a proc sort?

Example: The following data show the average length in feet of selected whales and sharks: . The DATA step reads the raw data from a file called Sealife.dat and creates a SAS data set named MARINE. Then PROC SORT rearranges the observations by family in ascending order, and by length in descending order.