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Date:         Fri, 2 Dec 2005 07:16:14 -0500
Reply-To:     Gerhard Hellriegel <ghellrieg@T-ONLINE.DE>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Gerhard Hellriegel <ghellrieg@T-ONLINE.DE>
Subject:      Re: length of id

Hi Dirk, ...especially because chars are more exact! In SAS you have only binary float-numbers. You might not see the difference between 0.9999999999999 and 1.0000000012345, but e.g. a MERGE does not match these "IDs". In other languages you have INTEGERs for that, in SAS you don't. So it's better to convert all to chars. However if you insist on numerics and you are aware of the no-matching problems, you can ignore the warnings about the formats. Also with a format nothing gets better. Regards, Gerhard

On Fri, 2 Dec 2005 06:16:45 -0500, Jim Groeneveld <jim1stat@YAHOO.CO.UK> wrote:

>Hi Dirk, > >You do not need to define the length of the variable, but (to associate) >the appropriate format. Your value may get as high as 190,000,000, so a >format might be: 9. or BEST9. (incl. the period). But as these numbers are >only identification codes and have no meaning and will not be used in >calculations I prefer ID's to be of character type, just text, even if >consisting of only digits. > >Regards - Jim. >-- >Y. (Jim) Groeneveld, MSc., Biostatistician, Vitatron b.v., NL > (replace _AT_ by AT sign) >, > >My computer regards me as its master, but I seem to be its slave. > >[common disclaimer] > >On Fri, 2 Dec 2005 10:45:03 Z, Dirk Nachbar <Dirk.Nachbar@DWP.GSI.GOV.UK> >wrote: > >>Dear all >> >>I am merging 12 tables by a PID. Now this variable can be as high as >1.9E8. The >>SAS log reports the following error. >> >>At least one W.D format was too small for the number to be printed. The >decimal >>may be >> shifted by the "BEST" format. >> >>I tried to define the length of PID in the merge-data-step, but SAS won't >have >>it.. What should I do? >> >> >>Dirk Nachbar >>Assistant Economist >>Pensim2 >>Department for Work and Pensions >>Level 4, The Adelphi >>1-11 John Adam St >>WC2N 6HT London >>020 796 28531 >>********************************************************************** >>This document is strictly confidential and is intended only for use by the >addressee. >>If you are not the intended recipient, any disclosure, copying, >distribution or other >>action taken in reliance of the information contained in this e-mail is >strictly prohibited. >>Any views expressed by the sender of this message are not necessarily >those of the Department >>for Work and Pensions. >>If you have received this transmission in error, please use the reply >function to tell us >>and then permanently delete what you have received. >>Please note: Incoming and outgoing e-mail messages are routinely monitored >for compliance >>with our policy on the use of electronic communications. >>********************************************************************** >> >> >> >>The original of this email was scanned for viruses by the Government >Secure Intranet (GSi) virus scanning service supplied exclusively by Cable >& Wireless in partnership with MessageLabs. >> >>On leaving the GSi this email was certified virus-free

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