How to reshape data wide to long [duplicate]

问题

This question already has answers here:

SAS Data formatting (reverse proc transpose?) (2 answers)

Closed 3 years ago.

I want to reshape data columns to rows

Initial Table as shown below

ID1     ID2     ID3     Name
----------------------------
I001    I002    I003    John

Desire Table like

ID      Name
------------
I001    John
I002    John
I003    John

Can anyone help out?

Thanks lots!!

回答1:

One way to do this is to set up an array of IDs and loop through with an explicit OUTPUT statement.

data want;
  set have;

  array ids(3) id1-id3;

  do i=1 to dim(ids);
      ID=ids(i);
      OUTPUT;
  end;
run;

回答2:

You can use PROC TRANSPOSE Make sure your data is sorted by NAME

proc transpose data=have out=want(rename=(_name_=ID));
by Name;
run;

来源：https://stackoverflow.com/questions/35631395/how-to-reshape-data-wide-to-long