====== pears.PostCodePart ======
<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"."PostCodePart"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  in "postcode" char(20),in "part" char(20) ) 
returns char(20)
deterministic
begin
  declare "i" integer;
  declare "area" char(20);
  set "postcode" = "trim"("postcode");
  set "i" = "patindex"('%[0-9]%',"postcode");
  if "i" = 0 then
    return null
  end if;
  set "area" = "substr"("postcode",1,"i"-1);
  if "part" = 'area' then
    return "area"
  end if;
  set "postcode" = "stuff"("postcode",1,"i"-1,null);
  set "i" = "patindex"('%[^0-9]%',"postcode");
  if "part" = 'district' then
    return "area"+"left"("substr"("postcode",1,"i"-1),2)
  end if
end
</code>