Date:         Wed, 7 Jun 2000 13:41:03 -0400
Reply-To:     Ian Whitlock <WHITLOI1@WESTAT.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Ian Whitlock <WHITLOI1@WESTAT.COM>
Subject:      Re: PUTting _all_
Comments: To: Bill Leblanc <BLeblanc@GWMAIL.VALENCIA.CC.FL.US>
Content-Type: text/plain; charset="iso-8859-1"

Bill,

It is a question of what havppen at compile time versus what happens at
execution time.

In

   PUT (_ALL_ ) (";") ;

_ALL_ is a list of variables generated from the PDV when this line is
compiled and _error_ and _n_ have not yet been added to the PDV.

In

   PUT _ALL_ ;

_ALL_ is a keyword saying write out the PDV as it is at execution time.

To verify this try

   data _null_ ;
      put (_all_) (=) ;
      put _all_ ;
      x = 1 ;
      put (_all_) (=) ;
      put _all_ ;
      y = 2 ;
      put (_all_) (=) ;
      put _all_ ;
   run ;

Ian Whitlock

-----Original Message-----
From: Bill Leblanc [mailto:BLeblanc@GWMAIL.VALENCIA.CC.FL.US]
Sent: Wednesday, June 07, 2000 12:16 PM
To: SAS-L@LISTSERV.UGA.EDU
Subject: Re: PUTting _all_


 I'm a little puzzled why (_all_)  suppresses the automatic variables while
_all_ does not.  See log:

2149   data _null_;
2150    x=1;y=2;z=3;
2151    put  (_all_) (';') @;
2152    put @1 ' ';
2153  run;

 1 ;2 ;3
NOTE: DATA statement used:
      real time           0.04 seconds


2154   data _null_;
2155    x=1;y=2;z=3;
2156    put  _all_  @;
2157    put @1 ' ';
2158  run;

 =1 y=2 z=3 _ERROR_=0 _N_=1
NOTE: DATA statement used:
      real time           0.00 seconds


-Bill LeBlanc