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Asked: 2026-06-09T22:32:24+00:00

How do I see if a text field is non numeric in a DB2

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How do I see if a text field is non numeric in a DB2 SQL query?

I have a text field column in a table and I only want to query rows that are 100% numbers.

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1 Answer

  1. Editorial Team

    Assuming the field is 10 digits long (like mine) this would be the solution.

    WHERE
  (  
     SUBSTRING(ID_NUM,1,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,2,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,3,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,4,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,5,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,6,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,7,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,8,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,9,1,OCTETS) BETWEEN '0' AND '9'
  OR SUBSTRING(ID_NUM,10,1,OCTETS)BETWEEN '0' AND '9'
  )
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