How do you do IF-THEN else in SAS?

The ELSE statement, if used, must immediately follow the IF-THEN statement. Using IF-THEN statements without the ELSE statement causes SAS to evaluate all IF-THEN statements. Using IF-THEN statements with the ELSE statement causes SAS to execute IF-THEN statements until it encounters the first true statement.

Can I use if and then and SAS?

You can use an IF-THEN-DO statement in SAS to do a block of statements if some condition is true. This statement uses the following basic syntax: if var1 = “value” then do; new_var2 = 10; new_var3 = 5; end; Note: An IF-THEN statement is used when you only want to do one statement.

Can you put a variable in an if statement?

Yes, you can assign the value of variable inside if.

Do statements in SAS?

The DO UNTIL statement executes statements in a DO loop repetitively until a condition is true, checking the condition after each iteration of the DO loop. The DO WHILE statement executes statements in a DO loop repetitively while a condition is true, checking the condition before each iteration of the DO loop.

What is the difference between if and where in SAS?

WHERE statement applies the subset condition before merging the data sets, Whereas, IF statement applies the subset condition after merging the data sets.

What does if _N_ 1 mean in SAS?

applications of the “IF _N_=1 THEN SET dsname” feature of the. SAS Data Step. It allows merging one record-datasets to multiple- record datasets.

What is @@ in SAS?

@@ holds an input record for the execution of the next INPUT statement across iterations of the DATA step. This line-hold specifier is called double trailing @.

What is the benefit of using if followed by ELSE IF statements rather than only using If statements in SAS?

An optional else-if statement can follow the if-then statement. SAS evaluates the expression in the else-if statement only when the previous expression is false. else-if statements are useful when forming mutually exclusive groups.

What is if-then in SAS?

is any SAS expression and is a required argument. can be any executable SAS statement or DO group. SAS evaluates the expression in an IF-THEN statement to produce a result that is either non-zero, zero, or missing. A non-zero and nonmissing result causes the expression to be true; a result of zero or missing causes the expression to be false.

How do I create a column in SAS Enterprise Guide?

Open the SASHELP.CLASS table into SAS Enterprise Guide. Select Data→Filter and Query to open the Query Builder. From the Query Builder, click Computed Columns to create a new column.

When to use subsetting if statements?

Use subsetting IF statements, without a THEN clause, to continue processing only those observations or records that meet the condition that is specified in the IF clause. These examples show different ways of specifying the IF-THEN/ELSE statement.