pears.Base34 [iqx]

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====== pears.Base34 ======
<WRAP center round info>
Generated schema reference. Regenerate this page from the SQL unload; keep hand-maintained business notes in the narrative namespace.
</WRAP>

===== Original SQL =====
<code sql>
create function "pears"."Base34"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  in "seed" integer,in "digits" smallint ) 
returns char(20)
begin
  declare "rv" char(20);
  declare "m" integer;
  declare "sdigits" char(34);
  -- Where the code must be handled by humans, letters O and I can be confused with zero and one so these are left out by base34
  set "sdigits" = '0123456789ABCDEFGHJKLMNPQRSTUVWXYZ';
  set "rv" = '';
  if(("digits" > 20) or("digits" < 1)) then
    set "digits" = 20
  end if;
  while "seed" > 0 loop
    set "m" = "mod"("seed",34);
    set "rv" = "substr"("sdigits","m"+1,1) || "rv";
    set "seed" = "seed"/34
  end loop;
  while "length"("rv") < "digits" loop
    set "rv" = '0' || "rv"
  end loop;
  return("rv")
end
</code>