How do I find missing values in PROC SQL?

How do I find missing values in PROC SQL?

Re: How to make PROC SQL count missing values? Either just use subtraction: proc sql; select count(*) as N , count(x) as NX , count(*)-count(x) as MISSX from sample ; quit; or SUM() a boolean expression.

How do you fill missing values in SAS?

First, we specify the input and (optional) output data set. Then, we use the reponly keyword to only replace missing values. With the method keyword, we let SAS know to replace missing values with the group mean. Finally, with the by statement, we specify how to group the data set.

How do I recode missing values in SAS?

Set values to missing and then recode them. Use new variable names when you create or recode variables. Avoid constructions like this, total = total + sub1 + sub2; that reuse the variable name total. Use the missing option with proc freq to make sure all missing values are accounted for.

How do you find missing values of all variables in SAS?

You can use the PROC FREQ procedure to count the number of missing values per column. You use the statement “table _all_ / missing” to do this for all variables. If you want the count the number of a specific (type) of variable, you can change the _all_ keyword for _character_, _numeric_, or a column name.

IS NULL operator in SAS?

But ‘is null’ can’t be used in ‘if’ statement in SAS. How can I realize the logic in SAS? There is a null value for numerical variables, not for character variables.

How do I set missing values to zero in SAS?

proc stdize data=Miss_Values out=ProcStdizeMethod reponly missing=0; run; By default, PROC STDIZE standardizes the input data by some location and scale parameter. However, we can suppress the standardization with the REPONLY Option. This option ensures that we are only to replace missing values and nothing else.

How do you replace missing values with 0 in SAS?

We can use the following code to replace the missing values with zeros in only the “y” column of the dataset: /*create new dataset with missing values in “y” column replaced by zero*/ data my_data_new; set my_data; array variablesOfInterest y; do over variablesOfInterest; if variablesOfInterest=.

How do you replace missing values with zero in SAS?

How does proc means handle missing values?

If a class variable has a missing value for an observation, PROC MEANS excludes that observation from the analysis unless you use the MISSING option in the PROC statement or the CLASS statement. If a BY or an ID variable value is missing, PROC MEANS treats it like any other BY or ID variable value.