PROC TRANSPOSE uses the following rules to name transposed variables:
1.An ID statement specifies a variable or variables in the input data set whose
formatted values become names for the transposed variables. If multiple ID variables
are specified, the name of the transposed variable is the concatenation of the values
of the ID variables. If the DELMITER= option is specified, its value is inserted
between the formatted values of the ID variables when the names of the transposed
variables are formed.
2.The PREFIX= option specifies a prefix to use in constructing the names of
transposed variables. The SUFFIX= option ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.