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Message Posted: Tue, 13 May 2008 @ 16:01:52 GMT

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          > (TO_CHAR(TO_DATE(lpad(decode(column_name,0,1900001,
          > column_name),7,0), 'YYYYDDD') ,'YYYYMM')

     decode(column_name,0,1900001,column_name)

This replaces zero values with 1900001. In Teradata:

     case
       when column_name = 0 then date '1900-01-01'
       else column_name
     end

The rest of the expression simply changes the date to a 'YYYYMM' format.

     cast(cast(case ... end as format 'YYYYMMDD') as char(6))

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