Question

True or False: The following program will execute without errors:

data work.merged;
merge blood.donors1 blood.donors2;
by ID;
run;

Answer 1

Whether the SAS program executes without errors depends on the existence, variable consistency, and sorting of the datasets 'blood.donors1' and 'blood.donors2' by 'ID'. Assuming correct setup, the program could run error-free.

Step-by-step explanation:

The statement is true or false depending on whether the datasets blood.donors1 and blood.donors2 exist, have the same variables and are sorted by ID. Without this information, it is not possible to determine the correctness of the statement definitively. However, if we assume that both datasets exist, contain an ID variable and are sorted by this variable, then the program would likely execute without errors.

The key to merging datasets with the MERGE statement in SAS is to ensure they are sorted by the variable(s) specified in the BY statement. If the datasets are not sorted, or the ID variables are different in some way (e.g., different types or different naming conventions), the program will result in an error.