Sas if then else
Sas evaluates the expression in an if-then statement to produce a result that is either nonzero, zero, or missing a nonzero and nonmissing result causes the expression to be true a result of zero or missing causes the expression to be false. 1 pharmasug 2016 - paper tt16 beyond if then else: techniques for conditional execution of sas code joshua m horstman, nested loop consulting, indianapolis, in. Hello, i've got the following if-then/else data grouping [ if runner3bid=0 then _if runner2bid=0 then ___if runner1bid=0 then do _____baserunners. To output multiple dataset after merged else if a then output intest1only else output intest2only run proc print run search advanced search sas frequently asked questions sas frequently used code resources for grant support. An introduction to sas data steps obviously if you will be sharing this code with anyone else then making it easy to understand is even if it is not, then sas jumps back to the top of the data step without writing any output however, all code before the subsetting if is still.
Lesson 5: if-then-else statements introduction again, once you've read your data into a sas data set, you probably want to do something with it. Now when we look at examples using these logical operators it jumps out of the if-then-else statement to the next statement in the data step sas then determines if the first bullet is true or if the second bullet is true. I have previously discussed how to define functions that safely evaluate their arguments and return a missing value if the argument is not in the domain of the function the canonical example is the log function, which is defined only for positive arguments for example, to evaluate the log function. Alternatives to sas if-then/else processing imelda c go, lexington county school district one, lexington, sc abstract if-then/else statements are simple and easy to use. Writing cleaner and more powerful sas code using macros patrick breheny - many sas data step functions (like put) have macro analogs %if (&state eq ia) %then %put iowa %else %put not iowa %do blocks just as in data steps, compound statements are.
If lastfull_name then output else delete run title3 'duplicated names from mailing list' proc print n u var full_name delivery_address finding duplicates using sas' first and last expressions clarence wm jackson, csqa so sorting by address got 113 records that were duplicated. A sas macro is way of defining parts of or collections of sas statements which can be all the usual programming elements: if-then-else statements, loops for i=1 to n do, and sas macro workshop. Sas programming basics a related statement to if-then is the else statement that can be used when creating conditional statements around mutually exclusive groups if you only want to use the formatted values for certain procedures in sas, then you can just add a format statement as we. Missing values in sas else if age then agecat=2 else agecat=3 sas version 8 introduced a new function, missing, that accepts either a character or numeric variable as the argument and returns the value 1 if the argument contains a missing value or zero otherwise. I am new to sas and would like to know what are the difference difference between if-then and if-then-do statements in sas. Having problems with an if/then statement in a proc sql statement of sas what am i missing or doing wrong not even getting any errorsjust not doing what it should: proc sql create table.
Sas if then else
Sas work shop: statistical programs : handout # 7: college of agriculture : topics covered: retention: deletion: if-then-else: else if trt = 3 then new = count1 + 15 else if trt = 4 then new = count1 + 20 in this case the. Nested if-then-else-end if the then part and the else part, if any, can contain one or more if-then-else-end if statement in one of the three forms. Quick hits - my favorite sas assignments are often accomplished with if-then-else logic (or sql case-when coding) you can consolidate sets of if-then-else code with a single function call using the ifc or ifn functions.
1 1 introduction to sas statistical package lecture 2 2 topics : zdata step set statement creating variables if/then if/then else statements functions. Sas in 60 seconds - pairing if-then with do loops mike's sas tutorials loading unsubscribe from mike's sas tutorials cancel unsubscribe sas if then else statements - duration: 11:38 jacquie mog 8,861 views 11:38. Base sas 14 a sas print procedure output of the worklevels data set is listed below: obs name level the following sas program is submitted: data workexpertise set worklevels if level = then expertise = 'unknown' else if level = 1 then expertise = 'low' else if level = 2 or 3 then. However, the if-then/else statement, which is part of the sas language, conditionally executes sas statements during data step execution the expression that is the condition for the %if-%then/%else statement can contain only operands that are constant text or text expressions that generate text. First and last variables: data step processing within by groups if you use a by statement along with a set statement in a data step then sas creates two automatic variables if firstgroup and lastgroup then output single else output dup run.
Do - end groups a plain if - then statement allows for only one result to occur when the if condition is true sas work shop statistical programs data step college of agriculture handout #8 http. So far in this lesson, you've seen examples of conditional processing (if-then/else statements and select groups) that execute only a single sas statement when a condition is true.