Need help with below statement in one program

[kajal_30]

IND_F = ID1 >= ID2 >= ID3 ;

One of the program says as below can someone please help what does that mean?

They are all date values.

I am seeing value of IND_F = 1 for few records not sure how ? 

Regards

kajal

[Astounding]

This is a shortcut, meaning:

IND_F = (ID1 >= ID2) and (ID2 >= ID3) ;

It returns a 0 or a 1, depending on the comparisons.  When both comparisons are true, IND_F receives a value of 1.  Otherwise it receives a value of 0.

[kajal_30]

Thank you so much

[Patrick · Accepted solution]

Below is logically the same formulated a bit more traditionally

  if (ID1 >= ID2) and (ID2 >= ID3) then IND_F =1;
  else IND_F = 0;

The code you've got is a bit more "shorthand". Everything right of the first equal sign is a logical expression for which SAS returns 1 if true and 0 if false.

[kajal_30]

thank you so much