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Date:         Wed, 23 Feb 2011 19:31:57 -0500
Reply-To:     "Kirby, Ted" <ted.kirby@LEWIN.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Kirby, Ted" <ted.kirby@LEWIN.COM>
Subject:      Re: MAX() function over character values
In-Reply-To:  A<>
Content-Type: text/plain; charset="us-ascii"

However, it appears from the examples that the min and max operators can take only two operands. Thus, some sort of looping structure would need to be used if you have a list of values of which you wanted the min or max.

-----Original Message----- From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of Paul Dorfman Sent: Wednesday, February 23, 2011 5:49 PM To: SAS-L@LISTSERV.UGA.EDU Subject: Re: MAX() function over character values


Here is one place: wer. htm#a000780367.htm

These have been around as long as I remember myself and SAS together. They are certainly described (with numerous usage examples) in Aster/Seidman circa 1990.

Kind regards ------------ Paul Dorfman Jax, FL ------------

On Wed, 23 Feb 2011 17:26:11 -0500, Arthur Tabachneck <art297@ROGERS.COM> wrote:

>Paul, > >That definitely works! Do you know if those operators are documented >anywhere? I never even knew they existed. > >Art >-------- >On Wed, 23 Feb 2011 16:57:28 -0500, Paul Dorfman <sashole@BELLSOUTH.NET> >wrote: > >>Yevgeniy, >> >>Use the MAX/MIN operators instead: >> >>s_max = s1 max s2 ; >>s_min = s1 min s2 ; >> >>You can also use them with numeric operands if you need to include missing >>values in the comparison. The descriptive statistics functions, including >>MIN/MAX ignore nulls - a side effect used to turn them into zeros via >>expressions like sum(val,0). And, to boot, the operators execute faster >than >>the respective functions. >> >>Kind regards >>------------ >>Paul Dorfman >>Jax, FL >>------------ >> >>On Wed, 23 Feb 2011 16:28:54 -0500, Bolotin Yevgeniy >><YBolotin@SCHOOLS.NYC.GOV> wrote: >> >>>The MAX function only works on numbers in SAS 9.2 >>> /vi >>>ewer.htm#a000245913.htm >>> >>>However, it works on both numbers and characters in SAS/IML 9.2 >>> lan >>>gref_sect169.htm >>> >>> >>>Is there a character-capable MAX function in SAS Base that I can use? >>> >>>(surprisingly enough, PROC SQL seems to have the same limitation) >>> ERROR: Function MAX requires a numeric expression as argument 1. >>> >>> >>> >>> >>>data _z; >>>length z $1.; >>>z = max('2','3','a'); >>>run; >>> >>> >>>NOTE: Character values have been converted to numeric values at the >>>places given by: >>> (Line):(Column). >>> 3053:9 3053:13 3053:17 >>>NOTE: Numeric values have been converted to character values at the >>>places given by: >>> (Line):(Column). >>> 3053:5 >>>NOTE: Invalid numeric data, 'a' , at line 3053 column 17. >>>z=3 _ERROR_=1 _N_=1 >>> >>> >>>Thanks >>> >>>SAS 9.2 >>>WinXP SP3 ************* IMPORTANT - PLEASE READ ********************

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