topic Re: Trim Function options (Does the documentation need updating?) in SAS Programming

Trim Function options (Does the documentation need updating?)

kjohnsonm — Fri, 08 Mar 2019 20:42:53 GMT

Hello all,

Minor question, I was just testing to see if the 'options' on TRIM would work for me in a project.

http://support.sas.com/documentation/cdl/en/fedsqlref/67364/HTML/default/viewer.htm#n1x15ai82patq8n1v4xryc1phpdr.htm

I see options 'Both | leading | trailing', I had never used an option with trim before so I tried it and so far cannot get anything to work but the default no option. Just curious. ?? Any chance this is obsolete document?

Example
Table: AFEWWORDS
The following statements illustrate the TRIM function:
Statements
Results
select trim(word1) from afewwords;
*some/
*every*
*no*
select trim(both '*' from word1) from afewwords;
some
every
no
select trim(leading '*' from word1) from afewwords;
some/
every*
no*
select trim(trailing '*' from word1) from afewwords;
*some/
*every
*no

data AfewWords;
infile datalines dlm=',';
input Word1 & $10. Word2 $15.;
datalines;
*some/ , WHERE 
*every* , THING 
*no* , BODY 
*no* ,  BODY  body   
;
proc print data=AfewWords;run;

proc sql;
select trim(word1) as trim_word1_exp1 from AfewWords
;quit;

/*
The above works, the below fails??
*/
proc sql;
select trim(both '*' from word1) as trim_word1_exp2 from AfewWords
;quit;

PS It seems that many of the SAS provided examples are very roughly written and leave a lot to the user or do not work.

Re: Trim Function options (Does the documentation need updating?)

Reeza — Fri, 08 Mar 2019 21:03:05 GMT

Note that you're in the FEDSQL documentation. You likely want the main SAS documentation instead, this doesn't apply to you.

https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=lefunctionsref&docsetTarget=n1io938ofitwnzn18e1hzel3u9ut.htm&locale=en

@kjohnsonm wrote:

Hello all,

Minor question, I was just testing to see if the 'options' on TRIM would work for me in a project.

http://support.sas.com/documentation/cdl/en/fedsqlref/67364/HTML/default/viewer.htm#n1x15ai82patq8n1v4xryc1phpdr.htm

I see options 'Both | leading | trailing', I had never used an option with trim before so I tried it and so far cannot get anything to work but the default no option. Just curious. ?? Any chance this is obsolete document?

Example
Table: AFEWWORDS
The following statements illustrate the TRIM function:
Statements
Results
select trim(word1) from afewwords;
*some/
*every*
*no*
select trim(both '*' from word1) from afewwords;
some
every
no
select trim(leading '*' from word1) from afewwords;
some/
every*
no*
select trim(trailing '*' from word1) from afewwords;
*some/
*every
*no
data AfewWords;
infile datalines dlm=',';
input Word1 & $10. Word2 $15.;
datalines;
*some/ , WHERE 
*every* , THING 
*no* , BODY 
*no* ,  BODY  body   
;
proc print data=AfewWords;run;

proc sql;
select trim(word1) as trim_word1_exp1 from AfewWords
;quit;

/*
The above works, the below fails??
*/
proc sql;
select trim(both '*' from word1) as trim_word1_exp2 from AfewWords
;quit; 
PS It seems that many of the SAS provided examples are very roughly written and leave a lot to the user or do not work.

Re: Trim Function options (Does the documentation need updating?)

Tom — Fri, 08 Mar 2019 21:12:27 GMT

You need to use PROC FEDSQL to use that version of TRIM().

data AfewWords;
infile datalines dlm=',';
input Word1 & $10. Word2 $15.;
datalines;
*some/ , WHERE 
*every* , THING 
*no* , BODY 
*no* ,  BODY  body   
;

proc fedsql;
  select *
       , trim(word1) as trim_word1_exp1 
       , trim(both '*' from word1) as trim_word1_exp2
       , trim(both '*' from trim(word1)) as trim_word1_exp3
  from AfewWords
  ;
quit;

Re: Trim Function options (Does the documentation need updating?)

kjohnsonm — Fri, 08 Mar 2019 22:37:29 GMT

Tom, I normally just google SAS and the key word/command I want to use. I feel a bit silly now. Thank you for the pointer, I had no idea there was a fedsql. -thanks.
However in my defense when I search for “sas 'proc sql' trim” no double quotes the number one hit is the fedsql version, the third hit is the proc sql' version to the documents. d'oh