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Editorial Team
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Asked: 2026-06-18T09:25:15+00:00

select * from mytable where (if @key=0 pkey>=0 else pkey = @key) @key is

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 select * 
 from mytable
 where (if @key=0 
           pkey>=0
        else
           pkey = @key)

@key is the value passed in to the stored procedure and pkey is a column in mytable.

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1 Answer

  1. Editorial Team

    You use CASE (bit like the way you are trying with if) as below. (DEMO)

    select * 
from mytable
where pkey = case when @key <> 0 then @key 
                  else Abs(pkey) end
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