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How do I pad a SAS text variable with leading zeros?

Posted on 2011-02-24
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Last Modified: 2013-11-16
Hello,

How do I pad a SAS text variable with leading zeros to the length of 10?

ex. var1 contains '123456'

Need it to be '0000123456'

Thanks,
SASnewbie
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Question by:SASnewbie
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LVL 14

Expert Comment

by:Aloysius Low
ID: 34970496
a quick way would be:
REVERSE(SUBSTR(TRIM(LEFT(REVERSE(text))) || "0000000000", 1, 10))

basically reverse the text and add 10 zeros to the string, then take the 1st 10 characters and reverse the string back

alternatively, if you are sure the text are all numbers, you could convert the text to numeric first, then use the z10. format:
PUT(INPUT(text, best.), z10.)
1
 

Author Comment

by:SASnewbie
ID: 34970731
Hi Iowaloysius,

Thanks for responding so quickly.

It is a text field that always contains numbers.

Would you give me the steps for the alternative method using the z10 starting with converting the text variable to a number variable?

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Accepted Solution

by:
Aloysius Low earned 2000 total points
ID: 34970764
the code example is actually already given above.

data [your output];
  set [your input];
  padded_value = PUT(INPUT([text variable to be converted and padded], best.), z10.);
run;
0
 

Author Comment

by:SASnewbie
ID: 34970848
Thank you.
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Author Comment

by:SASnewbie
ID: 34973024
Hi Iowaloysius,

This works perfectly!

data outputfilename;
  set inputfilename;
  var1= PUT(INPUT(var1, best.), z10.);
run;

Thanks,
SASnewbie
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